642061340

素因数分解:

$2^2\times 5^1\times {\mathrm{6163}}^1\times {\mathrm{5209}}^1$

素因数の和:11381

約数の個数: 24

約数和(自身を含む): 1348806480

約数和(自身を除く): 706745140

約数列:

[1, 2, 4, 5, 10, 20, 5209, 6163, 10418, 12326, 20836, 24652, 26045, 30815, 52090, 61630, 104180, 123260, 32103067, 64206134, 128412268, 160515335, 321030670, 642061340]

約数ペア:

[(1, 642061340), (2, 321030670), (4, 160515335), (5, 128412268), (10, 64206134), (20, 32103067), (5209, 123260), (6163, 104180), (10418, 61630), (12326, 52090), (20836, 30815), (24652, 26045)]