21000331786

素因数分解:

$2^1\times 7^1\times {\mathrm{1213}}^1\times {\mathrm{1236623}}^1$

素因数の和:1237845

約数の個数: 16

約数和(自身を含む): 36030276864

約数和(自身を除く): 15029945078

約数列:

[1, 2, 7, 14, 1213, 2426, 8491, 16982, 1236623, 2473246, 8656361, 17312722, 1500023699, 3000047398, 10500165893, 21000331786]

約数ペア:

[(1, 21000331786), (2, 10500165893), (7, 3000047398), (14, 1500023699), (1213, 17312722), (2426, 8656361), (8491, 2473246), (16982, 1236623)]