390464240

素因数分解:

$2^4\times 5^1\times {\mathrm{4880803}}^1$

素因数の和:4880816

約数の個数: 20

約数和(自身を含む): 907829544

約数和(自身を除く): 517365304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4880803, 9761606, 19523212, 24404015, 39046424, 48808030, 78092848, 97616060, 195232120, 390464240]

約数ペア:

[(1, 390464240), (2, 195232120), (4, 97616060), (5, 78092848), (8, 48808030), (10, 39046424), (16, 24404015), (20, 19523212), (40, 9761606), (80, 4880803)]