20406551

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1\times {\mathrm{389}}^1$

素因数の和:670

約数の個数: 16

約数和(自身を含む): 23587200

約数和(自身を除く): 3180649

約数列:

[1, 11, 19, 209, 251, 389, 2761, 4279, 4769, 7391, 52459, 81301, 97639, 1074029, 1855141, 20406551]

約数ペア:

[(1, 20406551), (11, 1855141), (19, 1074029), (209, 97639), (251, 81301), (389, 52459), (2761, 7391), (4279, 4769)]