20123621889

素因数分解:

$3^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{163}}^1\times {\mathrm{10631}}^1$

素因数の和:10890

約数の個数: 48

約数和(自身を含む): 31804139520

約数和(自身を除く): 11680517631

約数列:

[1, 3, 7, 21, 49, 79, 147, 163, 237, 489, 553, 1141, 1659, 3423, 3871, 7987, 10631, 11613, 12877, 23961, 31893, 38631, 74417, 90139, 223251, 270417, 520919, 630973, 839849, 1562757, 1732853, 1892919, 2519547, 5198559, 5878943, 12129971, 17636829, 36389913, 41152601, 84909797, 123457803, 136895387, 254729391, 410686161, 958267709, 2874803127, 6707873963, 20123621889]

約数ペア:

[(1, 20123621889), (3, 6707873963), (7, 2874803127), (21, 958267709), (49, 410686161), (79, 254729391), (147, 136895387), (163, 123457803), (237, 84909797), (489, 41152601), (553, 36389913), (1141, 17636829), (1659, 12129971), (3423, 5878943), (3871, 5198559), (7987, 2519547), (10631, 1892919), (11613, 1732853), (12877, 1562757), (23961, 839849), (31893, 630973), (38631, 520919), (74417, 270417), (90139, 223251)]