21430765

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{383}}^1$

素因数の和:457

約数の個数: 24

約数和(自身を含む): 28090368

約数和(自身を除く): 6659603

約数列:

[1, 5, 19, 31, 95, 155, 361, 383, 589, 1805, 1915, 2945, 7277, 11191, 11873, 36385, 55955, 59365, 138263, 225587, 691315, 1127935, 4286153, 21430765]

約数ペア:

[(1, 21430765), (5, 4286153), (19, 1127935), (31, 691315), (95, 225587), (155, 138263), (361, 59365), (383, 55955), (589, 36385), (1805, 11873), (1915, 11191), (2945, 7277)]