75005721

素因数分解:

$3^2\times 7^2\times {\mathrm{170081}}^1$

素因数の和:170101

約数の個数: 18

約数和(自身を含む): 126030762

約数和(自身を除く): 51025041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 170081, 510243, 1190567, 1530729, 3571701, 8333969, 10715103, 25001907, 75005721]

約数ペア:

[(1, 75005721), (3, 25001907), (7, 10715103), (9, 8333969), (21, 3571701), (49, 1530729), (63, 1190567), (147, 510243), (441, 170081)]