81913531

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{163}}^1$

素因数の和:331

約数の個数: 32

約数和(自身を含む): 103154688

約数和(自身を除く): 21241157

約数列:

[1, 7, 17, 41, 103, 119, 163, 287, 697, 721, 1141, 1751, 2771, 4223, 4879, 6683, 12257, 16789, 19397, 29561, 46781, 71791, 113611, 117523, 285413, 502537, 688349, 795277, 1997891, 4818443, 11701933, 81913531]

約数ペア:

[(1, 81913531), (7, 11701933), (17, 4818443), (41, 1997891), (103, 795277), (119, 688349), (163, 502537), (287, 285413), (697, 117523), (721, 113611), (1141, 71791), (1751, 46781), (2771, 29561), (4223, 19397), (4879, 16789), (6683, 12257)]