78400760

素因数分解:

$2^3\times 5^1\times {\mathrm{1960019}}^1$

素因数の和:1960030

約数の個数: 16

約数和(自身を含む): 176401800

約数和(自身を除く): 98001040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1960019, 3920038, 7840076, 9800095, 15680152, 19600190, 39200380, 78400760]

約数ペア:

[(1, 78400760), (2, 39200380), (4, 19600190), (5, 15680152), (8, 9800095), (10, 7840076), (20, 3920038), (40, 1960019)]