20171955965

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{788429}}^1$

素因数の和:788501

約数の個数: 32

約数和(自身を含む): 29972954880

約数和(自身を除く): 9800998915

約数列:

[1, 5, 7, 17, 35, 43, 85, 119, 215, 301, 595, 731, 1505, 3655, 5117, 25585, 788429, 3942145, 5519003, 13403293, 27595015, 33902447, 67016465, 93823051, 169512235, 237317129, 469115255, 576341599, 1186585645, 2881707995, 4034391193, 20171955965]

約数ペア:

[(1, 20171955965), (5, 4034391193), (7, 2881707995), (17, 1186585645), (35, 576341599), (43, 469115255), (85, 237317129), (119, 169512235), (215, 93823051), (301, 67016465), (595, 33902447), (731, 27595015), (1505, 13403293), (3655, 5519003), (5117, 3942145), (25585, 788429)]