21005607

素因数分解:

$3^1\times 7^1\times {\mathrm{191}}^1\times {\mathrm{5237}}^1$

素因数の和:5438

約数の個数: 16

約数和(自身を含む): 32182272

約数和(自身を除く): 11176665

約数列:

[1, 3, 7, 21, 191, 573, 1337, 4011, 5237, 15711, 36659, 109977, 1000267, 3000801, 7001869, 21005607]

約数ペア:

[(1, 21005607), (3, 7001869), (7, 3000801), (21, 1000267), (191, 109977), (573, 36659), (1337, 15711), (4011, 5237)]