21996423

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{149}}^1\times {\mathrm{349}}^1$

素因数の和:551

約数の個数: 24

約数和(自身を含む): 32760000

約数和(自身を除く): 10763577

約数列:

[1, 3, 9, 47, 141, 149, 349, 423, 447, 1047, 1341, 3141, 7003, 16403, 21009, 49209, 52001, 63027, 147627, 156003, 468009, 2444047, 7332141, 21996423]

約数ペア:

[(1, 21996423), (3, 7332141), (9, 2444047), (47, 468009), (141, 156003), (149, 147627), (349, 63027), (423, 52001), (447, 49209), (1047, 21009), (1341, 16403), (3141, 7003)]