18777780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{2129}}^1$

素因数の和:2158

約数の個数: 108

約数和(自身を含む): 66289860

約数和(自身を除く): 47512080

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2129, 2205, 2940, 4258, 4410, 6387, 8516, 8820, 10645, 12774, 14903, 19161, 21290, 25548, 29806, 31935, 38322, 42580, 44709, 59612, 63870, 74515, 76644, 89418, 95805, 104321, 127740, 134127, 149030, 178836, 191610, 208642, 223545, 268254, 298060, 312963, 383220, 417284, 447090, 521605, 536508, 625926, 670635, 894180, 938889, 1043210, 1251852, 1341270, 1564815, 1877778, 2086420, 2682540, 3129630, 3755556, 4694445, 6259260, 9388890, 18777780]

約数ペア:

[(1, 18777780), (2, 9388890), (3, 6259260), (4, 4694445), (5, 3755556), (6, 3129630), (7, 2682540), (9, 2086420), (10, 1877778), (12, 1564815), (14, 1341270), (15, 1251852), (18, 1043210), (20, 938889), (21, 894180), (28, 670635), (30, 625926), (35, 536508), (36, 521605), (42, 447090), (45, 417284), (49, 383220), (60, 312963), (63, 298060), (70, 268254), (84, 223545), (90, 208642), (98, 191610), (105, 178836), (126, 149030), (140, 134127), (147, 127740), (180, 104321), (196, 95805), (210, 89418), (245, 76644), (252, 74515), (294, 63870), (315, 59612), (420, 44709), (441, 42580), (490, 38322), (588, 31935), (630, 29806), (735, 25548), (882, 21290), (980, 19161), (1260, 14903), (1470, 12774), (1764, 10645), (2129, 8820), (2205, 8516), (2940, 6387), (4258, 4410)]