79811920

素因数分解:

$2^4\times 5^1\times {\mathrm{997649}}^1$

素因数の和:997662

約数の個数: 20

約数和(自身を含む): 185562900

約数和(自身を除く): 105750980

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 997649, 1995298, 3990596, 4988245, 7981192, 9976490, 15962384, 19952980, 39905960, 79811920]

約数ペア:

[(1, 79811920), (2, 39905960), (4, 19952980), (5, 15962384), (8, 9976490), (10, 7981192), (16, 4988245), (20, 3990596), (40, 1995298), (80, 997649)]