64921168

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{312121}}^1$

素因数の和:312142

約数の個数: 20

約数和(自身を含む): 135460948

約数和(自身を除く): 70539780

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 312121, 624242, 1248484, 2496968, 4057573, 4993936, 8115146, 16230292, 32460584, 64921168]

約数ペア:

[(1, 64921168), (2, 32460584), (4, 16230292), (8, 8115146), (13, 4993936), (16, 4057573), (26, 2496968), (52, 1248484), (104, 624242), (208, 312121)]