20948828

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{1289}}^1$

素因数の和:1549

約数の個数: 24

約数和(自身を含む): 39009600

約数和(自身を除く): 18060772

約数列:

[1, 2, 4, 17, 34, 68, 239, 478, 956, 1289, 2578, 4063, 5156, 8126, 16252, 21913, 43826, 87652, 308071, 616142, 1232284, 5237207, 10474414, 20948828]

約数ペア:

[(1, 20948828), (2, 10474414), (4, 5237207), (17, 1232284), (34, 616142), (68, 308071), (239, 87652), (478, 43826), (956, 21913), (1289, 16252), (2578, 8126), (4063, 5156)]