20717942

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1097}}^1$

素因数の和:1196

約数の個数: 32

約数和(自身を含む): 37946880

約数和(自身を除く): 17228938

約数列:

[1, 2, 7, 14, 19, 38, 71, 133, 142, 266, 497, 994, 1097, 1349, 2194, 2698, 7679, 9443, 15358, 18886, 20843, 41686, 77887, 145901, 155774, 291802, 545209, 1090418, 1479853, 2959706, 10358971, 20717942]

約数ペア:

[(1, 20717942), (2, 10358971), (7, 2959706), (14, 1479853), (19, 1090418), (38, 545209), (71, 291802), (133, 155774), (142, 145901), (266, 77887), (497, 41686), (994, 20843), (1097, 18886), (1349, 15358), (2194, 9443), (2698, 7679)]