21129710

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{15887}}^1$

素因数の和:15920

約数の個数: 32

約数和(自身を含む): 45757440

約数和(自身を除く): 24627730

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 133, 190, 266, 665, 1330, 15887, 31774, 79435, 111209, 158870, 222418, 301853, 556045, 603706, 1112090, 1509265, 2112971, 3018530, 4225942, 10564855, 21129710]

約数ペア:

[(1, 21129710), (2, 10564855), (5, 4225942), (7, 3018530), (10, 2112971), (14, 1509265), (19, 1112090), (35, 603706), (38, 556045), (70, 301853), (95, 222418), (133, 158870), (190, 111209), (266, 79435), (665, 31774), (1330, 15887)]