90687940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{647771}}^1$

素因数の和:647787

約数の個数: 24

約数和(自身を含む): 217651392

約数和(自身を除く): 126963452

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 647771, 1295542, 2591084, 3238855, 4534397, 6477710, 9068794, 12955420, 18137588, 22671985, 45343970, 90687940]

約数ペア:

[(1, 90687940), (2, 45343970), (4, 22671985), (5, 18137588), (7, 12955420), (10, 9068794), (14, 6477710), (20, 4534397), (28, 3238855), (35, 2591084), (70, 1295542), (140, 647771)]