21327290

素因数分解:

$2^1\times 5^1\times {\mathrm{307}}^1\times {\mathrm{6947}}^1$

素因数の和:7261

約数の個数: 16

約数和(自身を含む): 38519712

約数和(自身を除く): 17192422

約数列:

[1, 2, 5, 10, 307, 614, 1535, 3070, 6947, 13894, 34735, 69470, 2132729, 4265458, 10663645, 21327290]

約数ペア:

[(1, 21327290), (2, 10663645), (5, 4265458), (10, 2132729), (307, 69470), (614, 34735), (1535, 13894), (3070, 6947)]