20685730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{3881}}^1$

素因数の和:3942

約数の個数: 32

約数和(自身を含む): 41087088

約数和(自身を除く): 20401358

約数列:

[1, 2, 5, 10, 13, 26, 41, 65, 82, 130, 205, 410, 533, 1066, 2665, 3881, 5330, 7762, 19405, 38810, 50453, 100906, 159121, 252265, 318242, 504530, 795605, 1591210, 2068573, 4137146, 10342865, 20685730]

約数ペア:

[(1, 20685730), (2, 10342865), (5, 4137146), (10, 2068573), (13, 1591210), (26, 795605), (41, 504530), (65, 318242), (82, 252265), (130, 159121), (205, 100906), (410, 50453), (533, 38810), (1066, 19405), (2665, 7762), (3881, 5330)]