20283921

素因数分解:

$3^2\times 7^1\times {\mathrm{397}}^1\times {\mathrm{811}}^1$

素因数の和:1221

約数の個数: 24

約数和(自身を含む): 33610304

約数和(自身を除く): 13326383

約数列:

[1, 3, 7, 9, 21, 63, 397, 811, 1191, 2433, 2779, 3573, 5677, 7299, 8337, 17031, 25011, 51093, 321967, 965901, 2253769, 2897703, 6761307, 20283921]

約数ペア:

[(1, 20283921), (3, 6761307), (7, 2897703), (9, 2253769), (21, 965901), (63, 321967), (397, 51093), (811, 25011), (1191, 17031), (2433, 8337), (2779, 7299), (3573, 5677)]