638615728

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{13627}}^1$

素因数の和:13765

約数の個数: 40

約数和(自身を含む): 1292752080

約数和(自身を除く): 654136352

約数列:

[1, 2, 4, 8, 16, 29, 58, 101, 116, 202, 232, 404, 464, 808, 1616, 2929, 5858, 11716, 13627, 23432, 27254, 46864, 54508, 109016, 218032, 395183, 790366, 1376327, 1580732, 2752654, 3161464, 5505308, 6322928, 11010616, 22021232, 39913483, 79826966, 159653932, 319307864, 638615728]

約数ペア:

[(1, 638615728), (2, 319307864), (4, 159653932), (8, 79826966), (16, 39913483), (29, 22021232), (58, 11010616), (101, 6322928), (116, 5505308), (202, 3161464), (232, 2752654), (404, 1580732), (464, 1376327), (808, 790366), (1616, 395183), (2929, 218032), (5858, 109016), (11716, 54508), (13627, 46864), (23432, 27254)]