1690225

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1$

素因数の和:165

約数の個数: 24

約数和(自身を含む): 2296728

約数和(自身を除く): 606503

約数列:

[1, 5, 17, 25, 41, 85, 97, 205, 425, 485, 697, 1025, 1649, 2425, 3485, 3977, 8245, 17425, 19885, 41225, 67609, 99425, 338045, 1690225]

約数ペア:

[(1, 1690225), (5, 338045), (17, 99425), (25, 67609), (41, 41225), (85, 19885), (97, 17425), (205, 8245), (425, 3977), (485, 3485), (697, 2425), (1025, 1649)]