21450872320

素因数分解:

$2^9\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^2\times {\mathrm{157}}^1$

素因数の和:305

約数の個数: 240

約数和(自身を含む): 55530977040

約数和(自身を除く): 34080104720

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 53, 64, 76, 80, 95, 106, 128, 152, 157, 160, 190, 212, 256, 265, 304, 314, 320, 380, 424, 512, 530, 608, 628, 640, 760, 785, 848, 1007, 1060, 1216, 1256, 1280, 1520, 1570, 1696, 2014, 2120, 2432, 2512, 2560, 2809, 2983, 3040, 3140, 3392, 4028, 4240, 4864, 5024, 5035, 5618, 5966, 6080, 6280, 6784, 8056, 8321, 8480, 9728, 10048, 10070, 11236, 11932, 12160, 12560, 13568, 14045, 14915, 16112, 16642, 16960, 20096, 20140, 22472, 23864, 24320, 25120, 27136, 28090, 29830, 32224, 33284, 33920, 40192, 40280, 41605, 44944, 47728, 48640, 50240, 53371, 56180, 59660, 64448, 66568, 67840, 80384, 80560, 83210, 89888, 95456, 100480, 106742, 112360, 119320, 128896, 133136, 135680, 158099, 161120, 166420, 179776, 190912, 200960, 213484, 224720, 238640, 257792, 266272, 266855, 316198, 322240, 332840, 359552, 381824, 401920, 426968, 441013, 449440, 477280, 515584, 532544, 533710, 632396, 644480, 665680, 719104, 763648, 790495, 853936, 882026, 898880, 954560, 1065088, 1067420, 1264792, 1288960, 1331360, 1438208, 1527296, 1580990, 1707872, 1764052, 1797760, 1909120, 2130176, 2134840, 2205065, 2529584, 2577920, 2662720, 3161980, 3415744, 3528104, 3595520, 3818240, 4260352, 4269680, 4410130, 5059168, 5325440, 6323960, 6831488, 7056208, 7191040, 7636480, 8379247, 8539360, 8820260, 10118336, 10650880, 12647920, 13662976, 14112416, 16758494, 17078720, 17640520, 20236672, 21301760, 25295840, 27325952, 28224832, 33516988, 34157440, 35281040, 40473344, 41896235, 50591680, 56449664, 67033976, 68314880, 70562080, 80946688, 83792470, 101183360, 112899328, 134067952, 136629760, 141124160, 167584940, 202366720, 225798656, 268135904, 282248320, 335169880, 404733440, 536271808, 564496640, 670339760, 1072543616, 1128993280, 1340679520, 2145087232, 2681359040, 4290174464, 5362718080, 10725436160, 21450872320]

約数ペア:

[(1, 21450872320), (2, 10725436160), (4, 5362718080), (5, 4290174464), (8, 2681359040), (10, 2145087232), (16, 1340679520), (19, 1128993280), (20, 1072543616), (32, 670339760), (38, 564496640), (40, 536271808), (53, 404733440), (64, 335169880), (76, 282248320), (80, 268135904), (95, 225798656), (106, 202366720), (128, 167584940), (152, 141124160), (157, 136629760), (160, 134067952), (190, 112899328), (212, 101183360), (256, 83792470), (265, 80946688), (304, 70562080), (314, 68314880), (320, 67033976), (380, 56449664), (424, 50591680), (512, 41896235), (530, 40473344), (608, 35281040), (628, 34157440), (640, 33516988), (760, 28224832), (785, 27325952), (848, 25295840), (1007, 21301760), (1060, 20236672), (1216, 17640520), (1256, 17078720), (1280, 16758494), (1520, 14112416), (1570, 13662976), (1696, 12647920), (2014, 10650880), (2120, 10118336), (2432, 8820260), (2512, 8539360), (2560, 8379247), (2809, 7636480), (2983, 7191040), (3040, 7056208), (3140, 6831488), (3392, 6323960), (4028, 5325440), (4240, 5059168), (4864, 4410130), (5024, 4269680), (5035, 4260352), (5618, 3818240), (5966, 3595520), (6080, 3528104), (6280, 3415744), (6784, 3161980), (8056, 2662720), (8321, 2577920), (8480, 2529584), (9728, 2205065), (10048, 2134840), (10070, 2130176), (11236, 1909120), (11932, 1797760), (12160, 1764052), (12560, 1707872), (13568, 1580990), (14045, 1527296), (14915, 1438208), (16112, 1331360), (16642, 1288960), (16960, 1264792), (20096, 1067420), (20140, 1065088), (22472, 954560), (23864, 898880), (24320, 882026), (25120, 853936), (27136, 790495), (28090, 763648), (29830, 719104), (32224, 665680), (33284, 644480), (33920, 632396), (40192, 533710), (40280, 532544), (41605, 515584), (44944, 477280), (47728, 449440), (48640, 441013), (50240, 426968), (53371, 401920), (56180, 381824), (59660, 359552), (64448, 332840), (66568, 322240), (67840, 316198), (80384, 266855), (80560, 266272), (83210, 257792), (89888, 238640), (95456, 224720), (100480, 213484), (106742, 200960), (112360, 190912), (119320, 179776), (128896, 166420), (133136, 161120), (135680, 158099)]