21000369691

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{307}}^1\times {\mathrm{317}}^1\times {\mathrm{1063}}^1$

素因数の和:1723

約数の個数: 32

約数和(自身を含む): 25010979840

約数和(自身を除く): 4010610149

約数列:

[1, 7, 29, 203, 307, 317, 1063, 2149, 2219, 7441, 8903, 9193, 30827, 62321, 64351, 97319, 215789, 326341, 336971, 681233, 2284387, 2358797, 2822251, 9463889, 9772159, 19755757, 66247223, 68405113, 103450097, 724150679, 3000052813, 21000369691]

約数ペア:

[(1, 21000369691), (7, 3000052813), (29, 724150679), (203, 103450097), (307, 68405113), (317, 66247223), (1063, 19755757), (2149, 9772159), (2219, 9463889), (7441, 2822251), (8903, 2358797), (9193, 2284387), (30827, 681233), (62321, 336971), (64351, 326341), (97319, 215789)]