21916461

素因数分解:

$3^1\times 7^1\times {\mathrm{487}}^1\times {\mathrm{2143}}^1$

素因数の和:2640

約数の個数: 16

約数和(自身を含む): 33480704

約数和(自身を除く): 11564243

約数列:

[1, 3, 7, 21, 487, 1461, 2143, 3409, 6429, 10227, 15001, 45003, 1043641, 3130923, 7305487, 21916461]

約数ペア:

[(1, 21916461), (3, 7305487), (7, 3130923), (21, 1043641), (487, 45003), (1461, 15001), (2143, 10227), (3409, 6429)]