20897690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{6551}}^1$

素因数の和:6598

約数の個数: 32

約数和(自身を含む): 42456960

約数和(自身を除く): 21559270

約数列:

[1, 2, 5, 10, 11, 22, 29, 55, 58, 110, 145, 290, 319, 638, 1595, 3190, 6551, 13102, 32755, 65510, 72061, 144122, 189979, 360305, 379958, 720610, 949895, 1899790, 2089769, 4179538, 10448845, 20897690]

約数ペア:

[(1, 20897690), (2, 10448845), (5, 4179538), (10, 2089769), (11, 1899790), (22, 949895), (29, 720610), (55, 379958), (58, 360305), (110, 189979), (145, 144122), (290, 72061), (319, 65510), (638, 32755), (1595, 13102), (3190, 6551)]