638501890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{827}}^1\times {\mathrm{5939}}^1$

素因数の和:6786

約数の個数: 32

約数和(自身を含む): 1239416640

約数和(自身を除く): 600914750

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 827, 1654, 4135, 5939, 8270, 10751, 11878, 21502, 29695, 53755, 59390, 77207, 107510, 154414, 386035, 772070, 4911553, 9823106, 24557765, 49115530, 63850189, 127700378, 319250945, 638501890]

約数ペア:

[(1, 638501890), (2, 319250945), (5, 127700378), (10, 63850189), (13, 49115530), (26, 24557765), (65, 9823106), (130, 4911553), (827, 772070), (1654, 386035), (4135, 154414), (5939, 107510), (8270, 77207), (10751, 59390), (11878, 53755), (21502, 29695)]