20966463

素因数分解:

$3^2\times 7^2\times {\mathrm{47543}}^1$

素因数の和:47563

約数の個数: 18

約数和(自身を含む): 35230104

約数和(自身を除く): 14263641

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 47543, 142629, 332801, 427887, 998403, 2329607, 2995209, 6988821, 20966463]

約数ペア:

[(1, 20966463), (3, 6988821), (7, 2995209), (9, 2329607), (21, 998403), (49, 427887), (63, 332801), (147, 142629), (441, 47543)]