21698289

素因数分解:

$3^2\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{263}}^1$

素因数の和:461

約数の個数: 24

約数和(自身を含む): 32123520

約数和(自身を除く): 10425231

約数列:

[1, 3, 9, 89, 103, 263, 267, 309, 789, 801, 927, 2367, 9167, 23407, 27089, 27501, 70221, 81267, 82503, 210663, 243801, 2410921, 7232763, 21698289]

約数ペア:

[(1, 21698289), (3, 7232763), (9, 2410921), (89, 243801), (103, 210663), (263, 82503), (267, 81267), (309, 70221), (789, 27501), (801, 27089), (927, 23407), (2367, 9167)]