20807355

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{1543}}^1$

素因数の和:1611

約数の個数: 32

約数和(自身を含む): 35573760

約数和(自身を除く): 14766405

約数列:

[1, 3, 5, 15, 29, 31, 87, 93, 145, 155, 435, 465, 899, 1543, 2697, 4495, 4629, 7715, 13485, 23145, 44747, 47833, 134241, 143499, 223735, 239165, 671205, 717495, 1387157, 4161471, 6935785, 20807355]

約数ペア:

[(1, 20807355), (3, 6935785), (5, 4161471), (15, 1387157), (29, 717495), (31, 671205), (87, 239165), (93, 223735), (145, 143499), (155, 134241), (435, 47833), (465, 44747), (899, 23145), (1543, 13485), (2697, 7715), (4495, 4629)]