21553315

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{32411}}^1$

素因数の和:32442

約数の個数: 16

約数和(自身を含む): 31115520

約数和(自身を除く): 9562205

約数列:

[1, 5, 7, 19, 35, 95, 133, 665, 32411, 162055, 226877, 615809, 1134385, 3079045, 4310663, 21553315]

約数ペア:

[(1, 21553315), (5, 4310663), (7, 3079045), (19, 1134385), (35, 615809), (95, 226877), (133, 162055), (665, 32411)]