20489193

素因数分解:

$3^4\times {\mathrm{443}}^1\times {\mathrm{571}}^1$

素因数の和:1026

約数の個数: 20

約数和(自身を含む): 30730128

約数和(自身を除く): 10240935

約数列:

[1, 3, 9, 27, 81, 443, 571, 1329, 1713, 3987, 5139, 11961, 15417, 35883, 46251, 252953, 758859, 2276577, 6829731, 20489193]

約数ペア:

[(1, 20489193), (3, 6829731), (9, 2276577), (27, 758859), (81, 252953), (443, 46251), (571, 35883), (1329, 15417), (1713, 11961), (3987, 5139)]