20156780919

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{521}}^1\times {\mathrm{40427}}^1$

素因数の和:40991

約数の個数: 32

約数和(自身を含む): 30388919040

約数和(自身を除く): 10232138121

約数列:

[1, 3, 11, 29, 33, 87, 319, 521, 957, 1563, 5731, 15109, 17193, 40427, 45327, 121281, 166199, 444697, 498597, 1172383, 1334091, 3517149, 12896213, 21062467, 38688639, 63187401, 231687137, 610811543, 695061411, 1832434629, 6718926973, 20156780919]

約数ペア:

[(1, 20156780919), (3, 6718926973), (11, 1832434629), (29, 695061411), (33, 610811543), (87, 231687137), (319, 63187401), (521, 38688639), (957, 21062467), (1563, 12896213), (5731, 3517149), (15109, 1334091), (17193, 1172383), (40427, 498597), (45327, 444697), (121281, 166199)]