90281680

素因数分解:

$2^4\times 5^1\times {\mathrm{1128521}}^1$

素因数の和:1128534

約数の個数: 20

約数和(自身を含む): 209905092

約数和(自身を除く): 119623412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1128521, 2257042, 4514084, 5642605, 9028168, 11285210, 18056336, 22570420, 45140840, 90281680]

約数ペア:

[(1, 90281680), (2, 45140840), (4, 22570420), (5, 18056336), (8, 11285210), (10, 9028168), (16, 5642605), (20, 4514084), (40, 2257042), (80, 1128521)]