20187915

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{4219}}^1$

素因数の和:4267

約数の個数: 32

約数和(自身を含む): 36460800

約数和(自身を除く): 16272885

約数列:

[1, 3, 5, 11, 15, 29, 33, 55, 87, 145, 165, 319, 435, 957, 1595, 4219, 4785, 12657, 21095, 46409, 63285, 122351, 139227, 232045, 367053, 611755, 696135, 1345861, 1835265, 4037583, 6729305, 20187915]

約数ペア:

[(1, 20187915), (3, 6729305), (5, 4037583), (11, 1835265), (15, 1345861), (29, 696135), (33, 611755), (55, 367053), (87, 232045), (145, 139227), (165, 122351), (319, 63285), (435, 46409), (957, 21095), (1595, 12657), (4219, 4785)]