20390940

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{307}}^1$

素因数の和:369

約数の個数: 120

約数和(自身を含む): 65740752

約数和(自身を除く): 45349812

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 41, 45, 54, 60, 81, 82, 90, 108, 123, 135, 162, 164, 180, 205, 246, 270, 307, 324, 369, 405, 410, 492, 540, 614, 615, 738, 810, 820, 921, 1107, 1228, 1230, 1476, 1535, 1620, 1842, 1845, 2214, 2460, 2763, 3070, 3321, 3684, 3690, 4428, 4605, 5526, 5535, 6140, 6642, 7380, 8289, 9210, 11052, 11070, 12587, 13284, 13815, 16578, 16605, 18420, 22140, 24867, 25174, 27630, 33156, 33210, 37761, 41445, 49734, 50348, 55260, 62935, 66420, 75522, 82890, 99468, 113283, 124335, 125870, 151044, 165780, 188805, 226566, 248670, 251740, 339849, 377610, 453132, 497340, 566415, 679698, 755220, 1019547, 1132830, 1359396, 1699245, 2039094, 2265660, 3398490, 4078188, 5097735, 6796980, 10195470, 20390940]

約数ペア:

[(1, 20390940), (2, 10195470), (3, 6796980), (4, 5097735), (5, 4078188), (6, 3398490), (9, 2265660), (10, 2039094), (12, 1699245), (15, 1359396), (18, 1132830), (20, 1019547), (27, 755220), (30, 679698), (36, 566415), (41, 497340), (45, 453132), (54, 377610), (60, 339849), (81, 251740), (82, 248670), (90, 226566), (108, 188805), (123, 165780), (135, 151044), (162, 125870), (164, 124335), (180, 113283), (205, 99468), (246, 82890), (270, 75522), (307, 66420), (324, 62935), (369, 55260), (405, 50348), (410, 49734), (492, 41445), (540, 37761), (614, 33210), (615, 33156), (738, 27630), (810, 25174), (820, 24867), (921, 22140), (1107, 18420), (1228, 16605), (1230, 16578), (1476, 13815), (1535, 13284), (1620, 12587), (1842, 11070), (1845, 11052), (2214, 9210), (2460, 8289), (2763, 7380), (3070, 6642), (3321, 6140), (3684, 5535), (3690, 5526), (4428, 4605)]