21202190

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1\times {\mathrm{647}}^1$

素因数の和:796

約数の個数: 32

約数和(自身を含む): 39890880

約数和(自身を除く): 18688690

約数列:

[1, 2, 5, 10, 29, 58, 113, 145, 226, 290, 565, 647, 1130, 1294, 3235, 3277, 6470, 6554, 16385, 18763, 32770, 37526, 73111, 93815, 146222, 187630, 365555, 731110, 2120219, 4240438, 10601095, 21202190]

約数ペア:

[(1, 21202190), (2, 10601095), (5, 4240438), (10, 2120219), (29, 731110), (58, 365555), (113, 187630), (145, 146222), (226, 93815), (290, 73111), (565, 37526), (647, 32770), (1130, 18763), (1294, 16385), (3235, 6554), (3277, 6470)]