638690

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^3$

素因数の和:71

約数の個数: 32

約数和(自身を含む): 1315440

約数和(自身を除く): 676750

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 289, 442, 578, 1105, 1445, 2210, 2890, 3757, 4913, 7514, 9826, 18785, 24565, 37570, 49130, 63869, 127738, 319345, 638690]

約数ペア:

[(1, 638690), (2, 319345), (5, 127738), (10, 63869), (13, 49130), (17, 37570), (26, 24565), (34, 18785), (65, 9826), (85, 7514), (130, 4913), (170, 3757), (221, 2890), (289, 2210), (442, 1445), (578, 1105)]