21286510

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4283}}^1$

素因数の和:4368

約数の個数: 32

約数和(自身を含む): 44416512

約数和(自身を除く): 23130002

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 71, 142, 355, 497, 710, 994, 2485, 4283, 4970, 8566, 21415, 29981, 42830, 59962, 149905, 299810, 304093, 608186, 1520465, 2128651, 3040930, 4257302, 10643255, 21286510]

約数ペア:

[(1, 21286510), (2, 10643255), (5, 4257302), (7, 3040930), (10, 2128651), (14, 1520465), (35, 608186), (70, 304093), (71, 299810), (142, 149905), (355, 59962), (497, 42830), (710, 29981), (994, 21415), (2485, 8566), (4283, 4970)]