21860280

素因数分解:

$2^3\times 3^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1$

素因数の和:212

約数の個数: 192

約数和(自身を含む): 79803360

約数和(自身を除く): 57943080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 27, 30, 36, 39, 40, 45, 52, 54, 60, 65, 72, 78, 81, 90, 104, 108, 117, 120, 130, 135, 156, 162, 173, 180, 195, 216, 234, 243, 260, 270, 312, 324, 346, 351, 360, 390, 405, 468, 486, 519, 520, 540, 585, 648, 692, 702, 780, 810, 865, 936, 972, 1038, 1053, 1080, 1170, 1215, 1384, 1404, 1557, 1560, 1620, 1730, 1755, 1944, 2076, 2106, 2249, 2340, 2430, 2595, 2808, 3114, 3159, 3240, 3460, 3510, 4152, 4212, 4498, 4671, 4680, 4860, 5190, 5265, 6228, 6318, 6747, 6920, 7020, 7785, 8424, 8996, 9342, 9720, 10380, 10530, 11245, 12456, 12636, 13494, 14013, 14040, 15570, 15795, 17992, 18684, 20241, 20760, 21060, 22490, 23355, 25272, 26988, 28026, 31140, 31590, 33735, 37368, 40482, 42039, 42120, 44980, 46710, 53976, 56052, 60723, 62280, 63180, 67470, 70065, 80964, 84078, 89960, 93420, 101205, 112104, 121446, 126360, 134940, 140130, 161928, 168156, 182169, 186840, 202410, 210195, 242892, 269880, 280260, 303615, 336312, 364338, 404820, 420390, 485784, 546507, 560520, 607230, 728676, 809640, 840780, 910845, 1093014, 1214460, 1457352, 1681560, 1821690, 2186028, 2428920, 2732535, 3643380, 4372056, 5465070, 7286760, 10930140, 21860280]

約数ペア:

[(1, 21860280), (2, 10930140), (3, 7286760), (4, 5465070), (5, 4372056), (6, 3643380), (8, 2732535), (9, 2428920), (10, 2186028), (12, 1821690), (13, 1681560), (15, 1457352), (18, 1214460), (20, 1093014), (24, 910845), (26, 840780), (27, 809640), (30, 728676), (36, 607230), (39, 560520), (40, 546507), (45, 485784), (52, 420390), (54, 404820), (60, 364338), (65, 336312), (72, 303615), (78, 280260), (81, 269880), (90, 242892), (104, 210195), (108, 202410), (117, 186840), (120, 182169), (130, 168156), (135, 161928), (156, 140130), (162, 134940), (173, 126360), (180, 121446), (195, 112104), (216, 101205), (234, 93420), (243, 89960), (260, 84078), (270, 80964), (312, 70065), (324, 67470), (346, 63180), (351, 62280), (360, 60723), (390, 56052), (405, 53976), (468, 46710), (486, 44980), (519, 42120), (520, 42039), (540, 40482), (585, 37368), (648, 33735), (692, 31590), (702, 31140), (780, 28026), (810, 26988), (865, 25272), (936, 23355), (972, 22490), (1038, 21060), (1053, 20760), (1080, 20241), (1170, 18684), (1215, 17992), (1384, 15795), (1404, 15570), (1557, 14040), (1560, 14013), (1620, 13494), (1730, 12636), (1755, 12456), (1944, 11245), (2076, 10530), (2106, 10380), (2249, 9720), (2340, 9342), (2430, 8996), (2595, 8424), (2808, 7785), (3114, 7020), (3159, 6920), (3240, 6747), (3460, 6318), (3510, 6228), (4152, 5265), (4212, 5190), (4498, 4860), (4671, 4680)]