390627640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{751207}}^1$

素因数の和:751231

約数の個数: 32

約数和(自身を含む): 946522080

約数和(自身を除く): 555894440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 751207, 1502414, 3004828, 3756035, 6009656, 7512070, 9765691, 15024140, 19531382, 30048280, 39062764, 48828455, 78125528, 97656910, 195313820, 390627640]

約数ペア:

[(1, 390627640), (2, 195313820), (4, 97656910), (5, 78125528), (8, 48828455), (10, 39062764), (13, 30048280), (20, 19531382), (26, 15024140), (40, 9765691), (52, 7512070), (65, 6009656), (104, 3756035), (130, 3004828), (260, 1502414), (520, 751207)]