639532010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{289381}}^1$

素因数の和:289418

約数の個数: 32

約数和(自身を含む): 1312636752

約数和(自身を除く): 673104742

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 289381, 578762, 1446905, 2893810, 3761953, 4919477, 7523906, 9838954, 18809765, 24597385, 37619530, 49194770, 63953201, 127906402, 319766005, 639532010]

約数ペア:

[(1, 639532010), (2, 319766005), (5, 127906402), (10, 63953201), (13, 49194770), (17, 37619530), (26, 24597385), (34, 18809765), (65, 9838954), (85, 7523906), (130, 4919477), (170, 3761953), (221, 2893810), (442, 1446905), (1105, 578762), (2210, 289381)]