20172589415

素因数分解:

$5^1\times {\mathrm{11}}^4\times {\mathrm{23}}^1\times {\mathrm{11981}}^1$

素因数の和:12053

約数の個数: 40

約数和(自身を含む): 27787695840

約数和(自身を除く): 7615106425

約数列:

[1, 5, 11, 23, 55, 115, 121, 253, 605, 1265, 1331, 2783, 6655, 11981, 13915, 14641, 30613, 59905, 73205, 131791, 153065, 275563, 336743, 658955, 1377815, 1449701, 1683715, 3031193, 7248505, 15155965, 15946711, 33343123, 79733555, 166715615, 175413821, 366774353, 877069105, 1833871765, 4034517883, 20172589415]

約数ペア:

[(1, 20172589415), (5, 4034517883), (11, 1833871765), (23, 877069105), (55, 366774353), (115, 175413821), (121, 166715615), (253, 79733555), (605, 33343123), (1265, 15946711), (1331, 15155965), (2783, 7248505), (6655, 3031193), (11981, 1683715), (13915, 1449701), (14641, 1377815), (30613, 658955), (59905, 336743), (73205, 275563), (131791, 153065)]