20512756495

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1\times {\mathrm{17509}}^1$

素因数の和:17728

約数の個数: 64

約数和(自身を含む): 32677862400

約数和(自身を除く): 12165105905

約数列:

[1, 5, 7, 11, 17, 35, 55, 77, 85, 119, 179, 187, 385, 595, 895, 935, 1253, 1309, 1969, 3043, 6265, 6545, 9845, 13783, 15215, 17509, 21301, 33473, 68915, 87545, 106505, 122563, 167365, 192599, 234311, 297653, 612815, 962995, 1171555, 1348193, 1488265, 2083571, 3134111, 3274183, 6740965, 10417855, 15670555, 16370915, 21938777, 22919281, 34475221, 53279887, 109693885, 114596405, 172376105, 241326547, 266399435, 372959209, 586078757, 1206632735, 1864796045, 2930393785, 4102551299, 20512756495]

約数ペア:

[(1, 20512756495), (5, 4102551299), (7, 2930393785), (11, 1864796045), (17, 1206632735), (35, 586078757), (55, 372959209), (77, 266399435), (85, 241326547), (119, 172376105), (179, 114596405), (187, 109693885), (385, 53279887), (595, 34475221), (895, 22919281), (935, 21938777), (1253, 16370915), (1309, 15670555), (1969, 10417855), (3043, 6740965), (6265, 3274183), (6545, 3134111), (9845, 2083571), (13783, 1488265), (15215, 1348193), (17509, 1171555), (21301, 962995), (33473, 612815), (68915, 297653), (87545, 234311), (106505, 192599), (122563, 167365)]