20961148

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{2473}}^1$

素因数の和:2653

約数の個数: 24

約数和(自身を含む): 39762128

約数和(自身を除く): 18800980

約数列:

[1, 2, 4, 13, 26, 52, 163, 326, 652, 2119, 2473, 4238, 4946, 8476, 9892, 32149, 64298, 128596, 403099, 806198, 1612396, 5240287, 10480574, 20961148]

約数ペア:

[(1, 20961148), (2, 10480574), (4, 5240287), (13, 1612396), (26, 806198), (52, 403099), (163, 128596), (326, 64298), (652, 32149), (2119, 9892), (2473, 8476), (4238, 4946)]