18173285

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:389

約数の個数: 32

約数和(自身を含む): 25159680

約数和(自身を除く): 6986395

約数列:

[1, 5, 13, 29, 31, 65, 145, 155, 311, 377, 403, 899, 1555, 1885, 2015, 4043, 4495, 9019, 9641, 11687, 20215, 45095, 48205, 58435, 117247, 125333, 279589, 586235, 626665, 1397945, 3634657, 18173285]

約数ペア:

[(1, 18173285), (5, 3634657), (13, 1397945), (29, 626665), (31, 586235), (65, 279589), (145, 125333), (155, 117247), (311, 58435), (377, 48205), (403, 45095), (899, 20215), (1555, 11687), (1885, 9641), (2015, 9019), (4043, 4495)]