681345721

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{181}}^1\times {\mathrm{227}}^1$

素因数の和:541

約数の個数: 32

約数和(自身を含む): 828592128

約数和(自身を除く): 147246407

約数列:

[1, 7, 23, 103, 161, 181, 227, 721, 1267, 1589, 2369, 4163, 5221, 16583, 18643, 23381, 29141, 36547, 41087, 130501, 163667, 287609, 428789, 537763, 945001, 3001523, 3764341, 4231961, 6615007, 29623727, 97335103, 681345721]

約数ペア:

[(1, 681345721), (7, 97335103), (23, 29623727), (103, 6615007), (161, 4231961), (181, 3764341), (227, 3001523), (721, 945001), (1267, 537763), (1589, 428789), (2369, 287609), (4163, 163667), (5221, 130501), (16583, 41087), (18643, 36547), (23381, 29141)]