28885040

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{317}}^1$

素因数の和:414

約数の個数: 80

約数和(自身を含む): 72397152

約数和(自身を除く): 43512112

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 67, 68, 80, 85, 134, 136, 170, 268, 272, 317, 335, 340, 536, 634, 670, 680, 1072, 1139, 1268, 1340, 1360, 1585, 2278, 2536, 2680, 3170, 4556, 5072, 5360, 5389, 5695, 6340, 9112, 10778, 11390, 12680, 18224, 21239, 21556, 22780, 25360, 26945, 42478, 43112, 45560, 53890, 84956, 86224, 91120, 106195, 107780, 169912, 212390, 215560, 339824, 361063, 424780, 431120, 722126, 849560, 1444252, 1699120, 1805315, 2888504, 3610630, 5777008, 7221260, 14442520, 28885040]

約数ペア:

[(1, 28885040), (2, 14442520), (4, 7221260), (5, 5777008), (8, 3610630), (10, 2888504), (16, 1805315), (17, 1699120), (20, 1444252), (34, 849560), (40, 722126), (67, 431120), (68, 424780), (80, 361063), (85, 339824), (134, 215560), (136, 212390), (170, 169912), (268, 107780), (272, 106195), (317, 91120), (335, 86224), (340, 84956), (536, 53890), (634, 45560), (670, 43112), (680, 42478), (1072, 26945), (1139, 25360), (1268, 22780), (1340, 21556), (1360, 21239), (1585, 18224), (2278, 12680), (2536, 11390), (2680, 10778), (3170, 9112), (4556, 6340), (5072, 5695), (5360, 5389)]