80727980

素因数分解:

$2^2\times 5^1\times {\mathrm{571}}^1\times {\mathrm{7069}}^1$

素因数の和:7649

約数の個数: 24

約数和(自身を含む): 169849680

約数和(自身を除く): 89121700

約数列:

[1, 2, 4, 5, 10, 20, 571, 1142, 2284, 2855, 5710, 7069, 11420, 14138, 28276, 35345, 70690, 141380, 4036399, 8072798, 16145596, 20181995, 40363990, 80727980]

約数ペア:

[(1, 80727980), (2, 40363990), (4, 20181995), (5, 16145596), (10, 8072798), (20, 4036399), (571, 141380), (1142, 70690), (2284, 35345), (2855, 28276), (5710, 14138), (7069, 11420)]