21911553

素因数分解:

$3^7\times {\mathrm{43}}^1\times {\mathrm{233}}^1$

素因数の和:297

約数の個数: 32

約数和(自身を含む): 33770880

約数和(自身を除く): 11859327

約数列:

[1, 3, 9, 27, 43, 81, 129, 233, 243, 387, 699, 729, 1161, 2097, 2187, 3483, 6291, 10019, 10449, 18873, 30057, 31347, 56619, 90171, 94041, 169857, 270513, 509571, 811539, 2434617, 7303851, 21911553]

約数ペア:

[(1, 21911553), (3, 7303851), (9, 2434617), (27, 811539), (43, 509571), (81, 270513), (129, 169857), (233, 94041), (243, 90171), (387, 56619), (699, 31347), (729, 30057), (1161, 18873), (2097, 10449), (2187, 10019), (3483, 6291)]