1561368320

素因数分解:

$2^8\times 5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:199

約数の個数: 216

約数和(自身を含む): 4111873920

約数和(自身を除く): 2550505600

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 32, 38, 40, 62, 64, 76, 80, 95, 109, 124, 128, 152, 155, 160, 190, 218, 248, 256, 304, 310, 320, 361, 380, 436, 496, 545, 589, 608, 620, 640, 722, 760, 872, 992, 1090, 1178, 1216, 1240, 1280, 1444, 1520, 1744, 1805, 1984, 2071, 2180, 2356, 2432, 2480, 2888, 2945, 3040, 3379, 3488, 3610, 3968, 4142, 4360, 4712, 4864, 4960, 5776, 5890, 6080, 6758, 6976, 7220, 7936, 8284, 8720, 9424, 9920, 10355, 11191, 11552, 11780, 12160, 13516, 13952, 14440, 16568, 16895, 17440, 18848, 19840, 20710, 22382, 23104, 23560, 24320, 27032, 27904, 28880, 33136, 33790, 34880, 37696, 39349, 39680, 41420, 44764, 46208, 47120, 54064, 55955, 57760, 64201, 66272, 67580, 69760, 75392, 78698, 82840, 89528, 92416, 94240, 108128, 111910, 115520, 128402, 132544, 135160, 139520, 150784, 157396, 165680, 179056, 188480, 196745, 216256, 223820, 231040, 256804, 265088, 270320, 314792, 321005, 331360, 358112, 376960, 393490, 432512, 447640, 462080, 513608, 530176, 540640, 629584, 642010, 662720, 716224, 753920, 786980, 865024, 895280, 1027216, 1081280, 1219819, 1259168, 1284020, 1325440, 1432448, 1573960, 1790560, 2054432, 2162560, 2439638, 2518336, 2568040, 2650880, 2864896, 3147920, 3581120, 4108864, 4325120, 4879276, 5036672, 5136080, 6099095, 6295840, 7162240, 8217728, 9758552, 10073344, 10272160, 12198190, 12591680, 14324480, 16435456, 19517104, 20544320, 24396380, 25183360, 39034208, 41088640, 48792760, 50366720, 78068416, 82177280, 97585520, 156136832, 195171040, 312273664, 390342080, 780684160, 1561368320]

約数ペア:

[(1, 1561368320), (2, 780684160), (4, 390342080), (5, 312273664), (8, 195171040), (10, 156136832), (16, 97585520), (19, 82177280), (20, 78068416), (31, 50366720), (32, 48792760), (38, 41088640), (40, 39034208), (62, 25183360), (64, 24396380), (76, 20544320), (80, 19517104), (95, 16435456), (109, 14324480), (124, 12591680), (128, 12198190), (152, 10272160), (155, 10073344), (160, 9758552), (190, 8217728), (218, 7162240), (248, 6295840), (256, 6099095), (304, 5136080), (310, 5036672), (320, 4879276), (361, 4325120), (380, 4108864), (436, 3581120), (496, 3147920), (545, 2864896), (589, 2650880), (608, 2568040), (620, 2518336), (640, 2439638), (722, 2162560), (760, 2054432), (872, 1790560), (992, 1573960), (1090, 1432448), (1178, 1325440), (1216, 1284020), (1240, 1259168), (1280, 1219819), (1444, 1081280), (1520, 1027216), (1744, 895280), (1805, 865024), (1984, 786980), (2071, 753920), (2180, 716224), (2356, 662720), (2432, 642010), (2480, 629584), (2888, 540640), (2945, 530176), (3040, 513608), (3379, 462080), (3488, 447640), (3610, 432512), (3968, 393490), (4142, 376960), (4360, 358112), (4712, 331360), (4864, 321005), (4960, 314792), (5776, 270320), (5890, 265088), (6080, 256804), (6758, 231040), (6976, 223820), (7220, 216256), (7936, 196745), (8284, 188480), (8720, 179056), (9424, 165680), (9920, 157396), (10355, 150784), (11191, 139520), (11552, 135160), (11780, 132544), (12160, 128402), (13516, 115520), (13952, 111910), (14440, 108128), (16568, 94240), (16895, 92416), (17440, 89528), (18848, 82840), (19840, 78698), (20710, 75392), (22382, 69760), (23104, 67580), (23560, 66272), (24320, 64201), (27032, 57760), (27904, 55955), (28880, 54064), (33136, 47120), (33790, 46208), (34880, 44764), (37696, 41420), (39349, 39680)]