21615908

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{2503}}^1$

素因数の和:2651

約数の個数: 24

約数和(自身を含む): 40384512

約数和(自身を除く): 18768604

約数列:

[1, 2, 4, 17, 34, 68, 127, 254, 508, 2159, 2503, 4318, 5006, 8636, 10012, 42551, 85102, 170204, 317881, 635762, 1271524, 5403977, 10807954, 21615908]

約数ペア:

[(1, 21615908), (2, 10807954), (4, 5403977), (17, 1271524), (34, 635762), (68, 317881), (127, 170204), (254, 85102), (508, 42551), (2159, 10012), (2503, 8636), (4318, 5006)]