28508325

素因数分解:

$3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 49330176

約数和(自身を除く): 20821851

約数列:

[1, 3, 5, 15, 25, 41, 73, 75, 123, 127, 205, 219, 365, 381, 615, 635, 1025, 1095, 1825, 1905, 2993, 3075, 3175, 5207, 5475, 8979, 9271, 9525, 14965, 15621, 26035, 27813, 44895, 46355, 74825, 78105, 130175, 139065, 224475, 231775, 380111, 390525, 695325, 1140333, 1900555, 5701665, 9502775, 28508325]

約数ペア:

[(1, 28508325), (3, 9502775), (5, 5701665), (15, 1900555), (25, 1140333), (41, 695325), (73, 390525), (75, 380111), (123, 231775), (127, 224475), (205, 139065), (219, 130175), (365, 78105), (381, 74825), (615, 46355), (635, 44895), (1025, 27813), (1095, 26035), (1825, 15621), (1905, 14965), (2993, 9525), (3075, 9271), (3175, 8979), (5207, 5475)]