20586940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{181}}^1$

素因数の和:259

約数の個数: 72

約数和(自身を含む): 48799296

約数和(自身を除く): 28212356

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 47, 55, 94, 110, 121, 181, 188, 220, 235, 242, 362, 470, 484, 517, 605, 724, 905, 940, 1034, 1210, 1810, 1991, 2068, 2420, 2585, 3620, 3982, 5170, 5687, 7964, 8507, 9955, 10340, 11374, 17014, 19910, 21901, 22748, 28435, 34028, 39820, 42535, 43802, 56870, 85070, 87604, 93577, 109505, 113740, 170140, 187154, 219010, 374308, 438020, 467885, 935770, 1029347, 1871540, 2058694, 4117388, 5146735, 10293470, 20586940]

約数ペア:

[(1, 20586940), (2, 10293470), (4, 5146735), (5, 4117388), (10, 2058694), (11, 1871540), (20, 1029347), (22, 935770), (44, 467885), (47, 438020), (55, 374308), (94, 219010), (110, 187154), (121, 170140), (181, 113740), (188, 109505), (220, 93577), (235, 87604), (242, 85070), (362, 56870), (470, 43802), (484, 42535), (517, 39820), (605, 34028), (724, 28435), (905, 22748), (940, 21901), (1034, 19910), (1210, 17014), (1810, 11374), (1991, 10340), (2068, 9955), (2420, 8507), (2585, 7964), (3620, 5687), (3982, 5170)]