399828208

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{857}}^1\times {\mathrm{2243}}^1$

素因数の和:3121

約数の個数: 40

約数和(自身を含む): 835602768

約数和(自身を除く): 435774560

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 857, 1714, 2243, 3428, 4486, 6856, 8972, 11141, 13712, 17944, 22282, 29159, 35888, 44564, 58318, 89128, 116636, 178256, 233272, 466544, 1922251, 3844502, 7689004, 15378008, 24989263, 30756016, 49978526, 99957052, 199914104, 399828208]

約数ペア:

[(1, 399828208), (2, 199914104), (4, 99957052), (8, 49978526), (13, 30756016), (16, 24989263), (26, 15378008), (52, 7689004), (104, 3844502), (208, 1922251), (857, 466544), (1714, 233272), (2243, 178256), (3428, 116636), (4486, 89128), (6856, 58318), (8972, 44564), (11141, 35888), (13712, 29159), (17944, 22282)]