20983806

素因数分解:

$2^1\times 3^3\times {\mathrm{523}}^1\times {\mathrm{743}}^1$

素因数の和:1277

約数の個数: 32

約数和(自身を含む): 46782720

約数和(自身を除く): 25798914

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 523, 743, 1046, 1486, 1569, 2229, 3138, 4458, 4707, 6687, 9414, 13374, 14121, 20061, 28242, 40122, 388589, 777178, 1165767, 2331534, 3497301, 6994602, 10491903, 20983806]

約数ペア:

[(1, 20983806), (2, 10491903), (3, 6994602), (6, 3497301), (9, 2331534), (18, 1165767), (27, 777178), (54, 388589), (523, 40122), (743, 28242), (1046, 20061), (1486, 14121), (1569, 13374), (2229, 9414), (3138, 6687), (4458, 4707)]