28245925

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1621}}^1$

素因数の和:1689

約数の個数: 24

約数和(自身を含む): 38013192

約数和(自身を除く): 9767267

約数列:

[1, 5, 17, 25, 41, 85, 205, 425, 697, 1025, 1621, 3485, 8105, 17425, 27557, 40525, 66461, 137785, 332305, 688925, 1129837, 1661525, 5649185, 28245925]

約数ペア:

[(1, 28245925), (5, 5649185), (17, 1661525), (25, 1129837), (41, 688925), (85, 332305), (205, 137785), (425, 66461), (697, 40525), (1025, 27557), (1621, 17425), (3485, 8105)]