20118861

素因数分解:

$3^4\times 7^2\times {\mathrm{37}}^1\times {\mathrm{137}}^1$

素因数の和:200

約数の個数: 60

約数和(自身を含む): 36167868

約数和(自身を除く): 16049007

約数列:

[1, 3, 7, 9, 21, 27, 37, 49, 63, 81, 111, 137, 147, 189, 259, 333, 411, 441, 567, 777, 959, 999, 1233, 1323, 1813, 2331, 2877, 2997, 3699, 3969, 5069, 5439, 6713, 6993, 8631, 11097, 15207, 16317, 20139, 20979, 25893, 35483, 45621, 48951, 60417, 77679, 106449, 136863, 146853, 181251, 248381, 319347, 410589, 543753, 745143, 958041, 2235429, 2874123, 6706287, 20118861]

約数ペア:

[(1, 20118861), (3, 6706287), (7, 2874123), (9, 2235429), (21, 958041), (27, 745143), (37, 543753), (49, 410589), (63, 319347), (81, 248381), (111, 181251), (137, 146853), (147, 136863), (189, 106449), (259, 77679), (333, 60417), (411, 48951), (441, 45621), (567, 35483), (777, 25893), (959, 20979), (999, 20139), (1233, 16317), (1323, 15207), (1813, 11097), (2331, 8631), (2877, 6993), (2997, 6713), (3699, 5439), (3969, 5069)]