20751170

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2657}}^1$

素因数の和:2746

約数の個数: 32

約数和(自身を含む): 41337216

約数和(自身を除く): 20586046

約数列:

[1, 2, 5, 10, 11, 22, 55, 71, 110, 142, 355, 710, 781, 1562, 2657, 3905, 5314, 7810, 13285, 26570, 29227, 58454, 146135, 188647, 292270, 377294, 943235, 1886470, 2075117, 4150234, 10375585, 20751170]

約数ペア:

[(1, 20751170), (2, 10375585), (5, 4150234), (10, 2075117), (11, 1886470), (22, 943235), (55, 377294), (71, 292270), (110, 188647), (142, 146135), (355, 58454), (710, 29227), (781, 26570), (1562, 13285), (2657, 7810), (3905, 5314)]