89996080

素因数分解:

$2^4\times 5^1\times {\mathrm{1124951}}^1$

素因数の和:1124964

約数の個数: 20

約数和(自身を含む): 209241072

約数和(自身を除く): 119244992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1124951, 2249902, 4499804, 5624755, 8999608, 11249510, 17999216, 22499020, 44998040, 89996080]

約数ペア:

[(1, 89996080), (2, 44998040), (4, 22499020), (5, 17999216), (8, 11249510), (10, 8999608), (16, 5624755), (20, 4499804), (40, 2249902), (80, 1124951)]