21995715

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{773}}^1$

素因数の和:1059

約数の個数: 32

約数和(自身を含む): 40421376

約数和(自身を除く): 18425661

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 271, 773, 813, 1355, 1897, 2319, 3865, 4065, 5411, 5691, 9485, 11595, 16233, 27055, 28455, 81165, 209483, 628449, 1047415, 1466381, 3142245, 4399143, 7331905, 21995715]

約数ペア:

[(1, 21995715), (3, 7331905), (5, 4399143), (7, 3142245), (15, 1466381), (21, 1047415), (35, 628449), (105, 209483), (271, 81165), (773, 28455), (813, 27055), (1355, 16233), (1897, 11595), (2319, 9485), (3865, 5691), (4065, 5411)]