20189954855

素因数分解:

$5^1\times 7^2\times {\mathrm{4153}}^1\times {\mathrm{19843}}^1$

素因数の和:24015

約数の個数: 24

約数和(自身を含む): 28191735792

約数和(自身を除く): 8001780937

約数列:

[1, 5, 7, 35, 49, 245, 4153, 19843, 20765, 29071, 99215, 138901, 145355, 203497, 694505, 972307, 1017485, 4861535, 82407979, 412039895, 576855853, 2884279265, 4037990971, 20189954855]

約数ペア:

[(1, 20189954855), (5, 4037990971), (7, 2884279265), (35, 576855853), (49, 412039895), (245, 82407979), (4153, 4861535), (19843, 1017485), (20765, 972307), (29071, 694505), (99215, 203497), (138901, 145355)]