127991680

素因数分解:

$2^7\times 5^1\times {\mathrm{227}}^1\times {\mathrm{881}}^1$

素因数の和:1127

約数の個数: 64

約数和(自身を含む): 307676880

約数和(自身を除く): 179685200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 227, 320, 454, 640, 881, 908, 1135, 1762, 1816, 2270, 3524, 3632, 4405, 4540, 7048, 7264, 8810, 9080, 14096, 14528, 17620, 18160, 28192, 29056, 35240, 36320, 56384, 70480, 72640, 112768, 140960, 145280, 199987, 281920, 399974, 563840, 799948, 999935, 1599896, 1999870, 3199792, 3999740, 6399584, 7999480, 12799168, 15998960, 25598336, 31997920, 63995840, 127991680]

約数ペア:

[(1, 127991680), (2, 63995840), (4, 31997920), (5, 25598336), (8, 15998960), (10, 12799168), (16, 7999480), (20, 6399584), (32, 3999740), (40, 3199792), (64, 1999870), (80, 1599896), (128, 999935), (160, 799948), (227, 563840), (320, 399974), (454, 281920), (640, 199987), (881, 145280), (908, 140960), (1135, 112768), (1762, 72640), (1816, 70480), (2270, 56384), (3524, 36320), (3632, 35240), (4405, 29056), (4540, 28192), (7048, 18160), (7264, 17620), (8810, 14528), (9080, 14096)]