20512679390

素因数分解:

$2^1\times 5^1\times 7^4\times {\mathrm{211}}^1\times {\mathrm{4049}}^1$

素因数の和:4295

約数の個数: 80

約数和(自身を含む): 43288894800

約数和(自身を除く): 22776215410

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 211, 245, 343, 422, 490, 686, 1055, 1477, 1715, 2110, 2401, 2954, 3430, 4049, 4802, 7385, 8098, 10339, 12005, 14770, 20245, 20678, 24010, 28343, 40490, 51695, 56686, 72373, 103390, 141715, 144746, 198401, 283430, 361865, 396802, 506611, 723730, 854339, 992005, 1013222, 1388807, 1708678, 1984010, 2533055, 2777614, 4271695, 5066110, 5980373, 6944035, 8543390, 9721649, 11960746, 13888070, 19443298, 29901865, 41862611, 48608245, 59803730, 83725222, 97216490, 209313055, 293038277, 418626110, 586076554, 1465191385, 2051267939, 2930382770, 4102535878, 10256339695, 20512679390]

約数ペア:

[(1, 20512679390), (2, 10256339695), (5, 4102535878), (7, 2930382770), (10, 2051267939), (14, 1465191385), (35, 586076554), (49, 418626110), (70, 293038277), (98, 209313055), (211, 97216490), (245, 83725222), (343, 59803730), (422, 48608245), (490, 41862611), (686, 29901865), (1055, 19443298), (1477, 13888070), (1715, 11960746), (2110, 9721649), (2401, 8543390), (2954, 6944035), (3430, 5980373), (4049, 5066110), (4802, 4271695), (7385, 2777614), (8098, 2533055), (10339, 1984010), (12005, 1708678), (14770, 1388807), (20245, 1013222), (20678, 992005), (24010, 854339), (28343, 723730), (40490, 506611), (51695, 396802), (56686, 361865), (72373, 283430), (103390, 198401), (141715, 144746)]