87765020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{21617}}^1$

素因数の和:21662

約数の個数: 48

約数和(自身を含む): 217909440

約数和(自身を除く): 130144420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 21617, 43234, 86468, 108085, 151319, 216170, 302638, 432340, 605276, 626893, 756595, 1253786, 1513190, 2507572, 3026380, 3134465, 4388251, 6268930, 8776502, 12537860, 17553004, 21941255, 43882510, 87765020]

約数ペア:

[(1, 87765020), (2, 43882510), (4, 21941255), (5, 17553004), (7, 12537860), (10, 8776502), (14, 6268930), (20, 4388251), (28, 3134465), (29, 3026380), (35, 2507572), (58, 1513190), (70, 1253786), (116, 756595), (140, 626893), (145, 605276), (203, 432340), (290, 302638), (406, 216170), (580, 151319), (812, 108085), (1015, 86468), (2030, 43234), (4060, 21617)]