64449320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{123941}}^1$

素因数の和:123965

約数の個数: 32

約数和(自身を含む): 156166920

約数和(自身を除く): 91717600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 123941, 247882, 495764, 619705, 991528, 1239410, 1611233, 2478820, 3222466, 4957640, 6444932, 8056165, 12889864, 16112330, 32224660, 64449320]

約数ペア:

[(1, 64449320), (2, 32224660), (4, 16112330), (5, 12889864), (8, 8056165), (10, 6444932), (13, 4957640), (20, 3222466), (26, 2478820), (40, 1611233), (52, 1239410), (65, 991528), (104, 619705), (130, 495764), (260, 247882), (520, 123941)]