21754475

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{3011}}^1$

素因数の和:3055

約数の個数: 18

約数和(自身を含む): 28665204

約数和(自身を除く): 6910729

約数列:

[1, 5, 17, 25, 85, 289, 425, 1445, 3011, 7225, 15055, 51187, 75275, 255935, 870179, 1279675, 4350895, 21754475]

約数ペア:

[(1, 21754475), (5, 4350895), (17, 1279675), (25, 870179), (85, 255935), (289, 75275), (425, 51187), (1445, 15055), (3011, 7225)]