19997463

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{367}}^1\times {\mathrm{443}}^1$

素因数の和:854

約数の個数: 16

約数和(自身を含む): 27449856

約数和(自身を除く): 7452393

約数列:

[1, 3, 41, 123, 367, 443, 1101, 1329, 15047, 18163, 45141, 54489, 162581, 487743, 6665821, 19997463]

約数ペア:

[(1, 19997463), (3, 6665821), (41, 487743), (123, 162581), (367, 54489), (443, 45141), (1101, 18163), (1329, 15047)]