80821488980

素因数分解:

$2^2\times 5^1\times {\mathrm{4041074449}}^1$

素因数の和:4041074458

約数の個数: 12

約数和(自身を含む): 169725126900

約数和(自身を除く): 88903637920

約数列:

[1, 2, 4, 5, 10, 20, 4041074449, 8082148898, 16164297796, 20205372245, 40410744490, 80821488980]

約数ペア:

[(1, 80821488980), (2, 40410744490), (4, 20205372245), (5, 16164297796), (10, 8082148898), (20, 4041074449)]