20566945

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{881}}^1$

素因数の和:945

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 9914975

約数列:

[1, 5, 7, 23, 29, 35, 115, 145, 161, 203, 667, 805, 881, 1015, 3335, 4405, 4669, 6167, 20263, 23345, 25549, 30835, 101315, 127745, 141841, 178843, 587627, 709205, 894215, 2938135, 4113389, 20566945]

約数ペア:

[(1, 20566945), (5, 4113389), (7, 2938135), (23, 894215), (29, 709205), (35, 587627), (115, 178843), (145, 141841), (161, 127745), (203, 101315), (667, 30835), (805, 25549), (881, 23345), (1015, 20263), (3335, 6167), (4405, 4669)]