20128925

素因数分解:

$5^2\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{463}}^1$

素因数の和:557

約数の個数: 24

約数和(自身を含む): 26236416

約数和(自身を除く): 6107491

約数列:

[1, 5, 25, 37, 47, 185, 235, 463, 925, 1175, 1739, 2315, 8695, 11575, 17131, 21761, 43475, 85655, 108805, 428275, 544025, 805157, 4025785, 20128925]

約数ペア:

[(1, 20128925), (5, 4025785), (25, 805157), (37, 544025), (47, 428275), (185, 108805), (235, 85655), (463, 43475), (925, 21761), (1175, 17131), (1739, 11575), (2315, 8695)]