21728241

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{1657}}^1$

素因数の和:1741

約数の個数: 24

約数和(自身を含む): 33106944

約数和(自身を除く): 11378703

約数列:

[1, 3, 9, 31, 47, 93, 141, 279, 423, 1457, 1657, 4371, 4971, 13113, 14913, 51367, 77879, 154101, 233637, 462303, 700911, 2414249, 7242747, 21728241]

約数ペア:

[(1, 21728241), (3, 7242747), (9, 2414249), (31, 700911), (47, 462303), (93, 233637), (141, 154101), (279, 77879), (423, 51367), (1457, 14913), (1657, 13113), (4371, 4971)]