21698721

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{1471}}^1$

素因数の和:1637

約数の個数: 24

約数和(自身を含む): 34444800

約数和(自身を除く): 12746079

約数列:

[1, 3, 9, 11, 33, 99, 149, 447, 1341, 1471, 1639, 4413, 4917, 13239, 14751, 16181, 48543, 145629, 219179, 657537, 1972611, 2410969, 7232907, 21698721]

約数ペア:

[(1, 21698721), (3, 7232907), (9, 2410969), (11, 1972611), (33, 657537), (99, 219179), (149, 145629), (447, 48543), (1341, 16181), (1471, 14751), (1639, 13239), (4413, 4917)]