21620855

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{2251}}^1$

素因数の和:2386

約数の個数: 16

約数和(自身を含む): 27726624

約数和(自身を除く): 6105769

約数列:

[1, 5, 17, 85, 113, 565, 1921, 2251, 9605, 11255, 38267, 191335, 254363, 1271815, 4324171, 21620855]

約数ペア:

[(1, 21620855), (5, 4324171), (17, 1271815), (85, 254363), (113, 191335), (565, 38267), (1921, 11255), (2251, 9605)]