20281440

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:125

約数の個数: 192

約数和(自身を含む): 69672960

約数和(自身を除く): 49391520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 29, 30, 31, 32, 40, 47, 48, 58, 60, 62, 80, 87, 93, 94, 96, 116, 120, 124, 141, 145, 155, 160, 174, 186, 188, 232, 235, 240, 248, 282, 290, 310, 348, 372, 376, 435, 464, 465, 470, 480, 496, 564, 580, 620, 696, 705, 744, 752, 870, 899, 928, 930, 940, 992, 1128, 1160, 1240, 1363, 1392, 1410, 1457, 1488, 1504, 1740, 1798, 1860, 1880, 2256, 2320, 2480, 2697, 2726, 2784, 2820, 2914, 2976, 3480, 3596, 3720, 3760, 4089, 4371, 4495, 4512, 4640, 4960, 5394, 5452, 5640, 5828, 6815, 6960, 7192, 7285, 7440, 7520, 8178, 8742, 8990, 10788, 10904, 11280, 11656, 13485, 13630, 13920, 14384, 14570, 14880, 16356, 17484, 17980, 20445, 21576, 21808, 21855, 22560, 23312, 26970, 27260, 28768, 29140, 32712, 34968, 35960, 40890, 42253, 43152, 43616, 43710, 46624, 53940, 54520, 58280, 65424, 69936, 71920, 81780, 84506, 86304, 87420, 107880, 109040, 116560, 126759, 130848, 139872, 143840, 163560, 169012, 174840, 211265, 215760, 218080, 233120, 253518, 327120, 338024, 349680, 422530, 431520, 507036, 633795, 654240, 676048, 699360, 845060, 1014072, 1267590, 1352096, 1690120, 2028144, 2535180, 3380240, 4056288, 5070360, 6760480, 10140720, 20281440]

約数ペア:

[(1, 20281440), (2, 10140720), (3, 6760480), (4, 5070360), (5, 4056288), (6, 3380240), (8, 2535180), (10, 2028144), (12, 1690120), (15, 1352096), (16, 1267590), (20, 1014072), (24, 845060), (29, 699360), (30, 676048), (31, 654240), (32, 633795), (40, 507036), (47, 431520), (48, 422530), (58, 349680), (60, 338024), (62, 327120), (80, 253518), (87, 233120), (93, 218080), (94, 215760), (96, 211265), (116, 174840), (120, 169012), (124, 163560), (141, 143840), (145, 139872), (155, 130848), (160, 126759), (174, 116560), (186, 109040), (188, 107880), (232, 87420), (235, 86304), (240, 84506), (248, 81780), (282, 71920), (290, 69936), (310, 65424), (348, 58280), (372, 54520), (376, 53940), (435, 46624), (464, 43710), (465, 43616), (470, 43152), (480, 42253), (496, 40890), (564, 35960), (580, 34968), (620, 32712), (696, 29140), (705, 28768), (744, 27260), (752, 26970), (870, 23312), (899, 22560), (928, 21855), (930, 21808), (940, 21576), (992, 20445), (1128, 17980), (1160, 17484), (1240, 16356), (1363, 14880), (1392, 14570), (1410, 14384), (1457, 13920), (1488, 13630), (1504, 13485), (1740, 11656), (1798, 11280), (1860, 10904), (1880, 10788), (2256, 8990), (2320, 8742), (2480, 8178), (2697, 7520), (2726, 7440), (2784, 7285), (2820, 7192), (2914, 6960), (2976, 6815), (3480, 5828), (3596, 5640), (3720, 5452), (3760, 5394), (4089, 4960), (4371, 4640), (4495, 4512)]