21634209

素因数分解:

$3^4\times {\mathrm{89}}^1\times {\mathrm{3001}}^1$

素因数の和:3102

約数の個数: 20

約数和(自身を含む): 32691780

約数和(自身を除く): 11057571

約数列:

[1, 3, 9, 27, 81, 89, 267, 801, 2403, 3001, 7209, 9003, 27009, 81027, 243081, 267089, 801267, 2403801, 7211403, 21634209]

約数ペア:

[(1, 21634209), (3, 7211403), (9, 2403801), (27, 801267), (81, 267089), (89, 243081), (267, 81027), (801, 27009), (2403, 9003), (3001, 7209)]