12820925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{383}}^1$

素因数の和:509

約数の個数: 24

約数和(自身を含む): 17332224

約数和(自身を除く): 4511299

約数列:

[1, 5, 13, 25, 65, 103, 325, 383, 515, 1339, 1915, 2575, 4979, 6695, 9575, 24895, 33475, 39449, 124475, 197245, 512837, 986225, 2564185, 12820925]

約数ペア:

[(1, 12820925), (5, 2564185), (13, 986225), (25, 512837), (65, 197245), (103, 124475), (325, 39449), (383, 33475), (515, 24895), (1339, 9575), (1915, 6695), (2575, 4979)]