821117540

素因数分解:

$2^2\times 5^1\times {\mathrm{1013}}^1\times {\mathrm{40529}}^1$

素因数の和:41551

約数の個数: 24

約数和(自身を含む): 1726091640

約数和(自身を除く): 904974100

約数列:

[1, 2, 4, 5, 10, 20, 1013, 2026, 4052, 5065, 10130, 20260, 40529, 81058, 162116, 202645, 405290, 810580, 41055877, 82111754, 164223508, 205279385, 410558770, 821117540]

約数ペア:

[(1, 821117540), (2, 410558770), (4, 205279385), (5, 164223508), (10, 82111754), (20, 41055877), (1013, 810580), (2026, 405290), (4052, 202645), (5065, 162116), (10130, 81058), (20260, 40529)]