21829255

素因数分解:

$5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{641}}^1$

素因数の和:799

約数の個数: 24

約数和(自身を含む): 30738960

約数和(自身を除く): 8909705

約数列:

[1, 5, 7, 35, 49, 139, 245, 641, 695, 973, 3205, 4487, 4865, 6811, 22435, 31409, 34055, 89099, 157045, 445495, 623693, 3118465, 4365851, 21829255]

約数ペア:

[(1, 21829255), (5, 4365851), (7, 3118465), (35, 623693), (49, 445495), (139, 157045), (245, 89099), (641, 34055), (695, 31409), (973, 22435), (3205, 6811), (4487, 4865)]