20857515

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{733}}^1$

素因数の和:1019

約数の個数: 32

約数和(自身を含む): 38332416

約数和(自身を除く): 17474901

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 271, 733, 813, 1355, 1897, 2199, 3665, 4065, 5131, 5691, 9485, 10995, 15393, 25655, 28455, 76965, 198643, 595929, 993215, 1390501, 2979645, 4171503, 6952505, 20857515]

約数ペア:

[(1, 20857515), (3, 6952505), (5, 4171503), (7, 2979645), (15, 1390501), (21, 993215), (35, 595929), (105, 198643), (271, 76965), (733, 28455), (813, 25655), (1355, 15393), (1897, 10995), (2199, 9485), (3665, 5691), (4065, 5131)]