99789680

素因数分解:

$2^4\times 5^1\times {\mathrm{1247371}}^1$

素因数の和:1247384

約数の個数: 20

約数和(自身を含む): 232011192

約数和(自身を除く): 132221512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1247371, 2494742, 4989484, 6236855, 9978968, 12473710, 19957936, 24947420, 49894840, 99789680]

約数ペア:

[(1, 99789680), (2, 49894840), (4, 24947420), (5, 19957936), (8, 12473710), (10, 9978968), (16, 6236855), (20, 4989484), (40, 2494742), (80, 1247371)]