131011960

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{13049}}^1$

素因数の和:13311

約数の個数: 32

約数和(自身を含む): 295974000

約数和(自身を除く): 164962040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 5020, 10040, 13049, 26098, 52196, 65245, 104392, 130490, 260980, 521960, 3275299, 6550598, 13101196, 16376495, 26202392, 32752990, 65505980, 131011960]

約数ペア:

[(1, 131011960), (2, 65505980), (4, 32752990), (5, 26202392), (8, 16376495), (10, 13101196), (20, 6550598), (40, 3275299), (251, 521960), (502, 260980), (1004, 130490), (1255, 104392), (2008, 65245), (2510, 52196), (5020, 26098), (10040, 13049)]