20397258

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{17987}}^1$

素因数の和:18008

約数の個数: 40

約数和(自身を含む): 52237152

約数和(自身を除く): 31839894

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 126, 162, 189, 378, 567, 1134, 17987, 35974, 53961, 107922, 125909, 161883, 251818, 323766, 377727, 485649, 755454, 971298, 1133181, 1456947, 2266362, 2913894, 3399543, 6799086, 10198629, 20397258]

約数ペア:

[(1, 20397258), (2, 10198629), (3, 6799086), (6, 3399543), (7, 2913894), (9, 2266362), (14, 1456947), (18, 1133181), (21, 971298), (27, 755454), (42, 485649), (54, 377727), (63, 323766), (81, 251818), (126, 161883), (162, 125909), (189, 107922), (378, 53961), (567, 35974), (1134, 17987)]