21045189

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{14831}}^1$

素因数の和:14888

約数の個数: 16

約数和(自身を含む): 31325184

約数和(自身を除く): 10279995

約数列:

[1, 3, 11, 33, 43, 129, 473, 1419, 14831, 44493, 163141, 489423, 637733, 1913199, 7015063, 21045189]

約数ペア:

[(1, 21045189), (3, 7015063), (11, 1913199), (33, 637733), (43, 489423), (129, 163141), (473, 44493), (1419, 14831)]