64853680

素因数分解:

$2^4\times 5^1\times {\mathrm{810671}}^1$

素因数の和:810684

約数の個数: 20

約数和(自身を含む): 150784992

約数和(自身を除く): 85931312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 810671, 1621342, 3242684, 4053355, 6485368, 8106710, 12970736, 16213420, 32426840, 64853680]

約数ペア:

[(1, 64853680), (2, 32426840), (4, 16213420), (5, 12970736), (8, 8106710), (10, 6485368), (16, 4053355), (20, 3242684), (40, 1621342), (80, 810671)]