21312116

素因数分解:

$2^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{6983}}^1$

素因数の和:7103

約数の個数: 24

約数和(自身を含む): 43021440

約数和(自身を除く): 21709324

約数列:

[1, 2, 4, 7, 14, 28, 109, 218, 436, 763, 1526, 3052, 6983, 13966, 27932, 48881, 97762, 195524, 761147, 1522294, 3044588, 5328029, 10656058, 21312116]

約数ペア:

[(1, 21312116), (2, 10656058), (4, 5328029), (7, 3044588), (14, 1522294), (28, 761147), (109, 195524), (218, 97762), (436, 48881), (763, 27932), (1526, 13966), (3052, 6983)]