20917858

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1\times {\mathrm{107}}^1$

素因数の和:298

約数の個数: 32

約数和(自身を含む): 34909056

約数和(自身を除く): 13991198

約数列:

[1, 2, 13, 26, 73, 103, 107, 146, 206, 214, 949, 1339, 1391, 1898, 2678, 2782, 7519, 7811, 11021, 15038, 15622, 22042, 97747, 101543, 143273, 195494, 203086, 286546, 804533, 1609066, 10458929, 20917858]

約数ペア:

[(1, 20917858), (2, 10458929), (13, 1609066), (26, 804533), (73, 286546), (103, 203086), (107, 195494), (146, 143273), (206, 101543), (214, 97747), (949, 22042), (1339, 15622), (1391, 15038), (1898, 11021), (2678, 7811), (2782, 7519)]