51581997

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{907}}^1$

素因数の和:1073

約数の個数: 24

約数和(自身を含む): 76489920

約数和(自身を除く): 24907923

約数列:

[1, 3, 9, 71, 89, 213, 267, 639, 801, 907, 2721, 6319, 8163, 18957, 56871, 64397, 80723, 193191, 242169, 579573, 726507, 5731333, 17193999, 51581997]

約数ペア:

[(1, 51581997), (3, 17193999), (9, 5731333), (71, 726507), (89, 579573), (213, 242169), (267, 193191), (639, 80723), (801, 64397), (907, 56871), (2721, 18957), (6319, 8163)]