20165980

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{8923}}^1$

素因数の和:9045

約数の個数: 24

約数和(自身を含む): 42728112

約数和(自身を除く): 22562132

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 8923, 17846, 35692, 44615, 89230, 178460, 1008299, 2016598, 4033196, 5041495, 10082990, 20165980]

約数ペア:

[(1, 20165980), (2, 10082990), (4, 5041495), (5, 4033196), (10, 2016598), (20, 1008299), (113, 178460), (226, 89230), (452, 44615), (565, 35692), (1130, 17846), (2260, 8923)]