20326390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:110

約数の個数: 128

約数和(自身を含む): 49766400

約数和(自身を除く): 29440010

約数列:

[1, 2, 5, 7, 10, 14, 17, 19, 29, 31, 34, 35, 38, 58, 62, 70, 85, 95, 119, 133, 145, 155, 170, 190, 203, 217, 238, 266, 290, 310, 323, 406, 434, 493, 527, 551, 589, 595, 646, 665, 899, 986, 1015, 1054, 1085, 1102, 1178, 1190, 1330, 1615, 1798, 2030, 2170, 2261, 2465, 2635, 2755, 2945, 3230, 3451, 3689, 3857, 4123, 4495, 4522, 4930, 5270, 5510, 5890, 6293, 6902, 7378, 7714, 8246, 8990, 9367, 10013, 11305, 12586, 15283, 17081, 17255, 18445, 18734, 19285, 20026, 20615, 22610, 30566, 31465, 34162, 34510, 36890, 38570, 41230, 46835, 50065, 62930, 65569, 70091, 76415, 85405, 93670, 100130, 106981, 119567, 131138, 140182, 152830, 170810, 213962, 239134, 290377, 327845, 350455, 534905, 580754, 597835, 655690, 700910, 1069810, 1195670, 1451885, 2032639, 2903770, 4065278, 10163195, 20326390]

約数ペア:

[(1, 20326390), (2, 10163195), (5, 4065278), (7, 2903770), (10, 2032639), (14, 1451885), (17, 1195670), (19, 1069810), (29, 700910), (31, 655690), (34, 597835), (35, 580754), (38, 534905), (58, 350455), (62, 327845), (70, 290377), (85, 239134), (95, 213962), (119, 170810), (133, 152830), (145, 140182), (155, 131138), (170, 119567), (190, 106981), (203, 100130), (217, 93670), (238, 85405), (266, 76415), (290, 70091), (310, 65569), (323, 62930), (406, 50065), (434, 46835), (493, 41230), (527, 38570), (551, 36890), (589, 34510), (595, 34162), (646, 31465), (665, 30566), (899, 22610), (986, 20615), (1015, 20026), (1054, 19285), (1085, 18734), (1102, 18445), (1178, 17255), (1190, 17081), (1330, 15283), (1615, 12586), (1798, 11305), (2030, 10013), (2170, 9367), (2261, 8990), (2465, 8246), (2635, 7714), (2755, 7378), (2945, 6902), (3230, 6293), (3451, 5890), (3689, 5510), (3857, 5270), (4123, 4930), (4495, 4522)]