21041870

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{659}}^1$

素因数の和:800

約数の個数: 32

約数和(自身を含む): 39536640

約数和(自身を除く): 18494770

約数列:

[1, 2, 5, 10, 31, 62, 103, 155, 206, 310, 515, 659, 1030, 1318, 3193, 3295, 6386, 6590, 15965, 20429, 31930, 40858, 67877, 102145, 135754, 204290, 339385, 678770, 2104187, 4208374, 10520935, 21041870]

約数ペア:

[(1, 21041870), (2, 10520935), (5, 4208374), (10, 2104187), (31, 678770), (62, 339385), (103, 204290), (155, 135754), (206, 102145), (310, 67877), (515, 40858), (659, 31930), (1030, 20429), (1318, 15965), (3193, 6590), (3295, 6386)]