12990620

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 28274400

約数和(自身を除く): 15283780

約数列:

[1, 2, 4, 5, 10, 20, 59, 101, 109, 118, 202, 218, 236, 295, 404, 436, 505, 545, 590, 1010, 1090, 1180, 2020, 2180, 5959, 6431, 11009, 11918, 12862, 22018, 23836, 25724, 29795, 32155, 44036, 55045, 59590, 64310, 110090, 119180, 128620, 220180, 649531, 1299062, 2598124, 3247655, 6495310, 12990620]

約数ペア:

[(1, 12990620), (2, 6495310), (4, 3247655), (5, 2598124), (10, 1299062), (20, 649531), (59, 220180), (101, 128620), (109, 119180), (118, 110090), (202, 64310), (218, 59590), (236, 55045), (295, 44036), (404, 32155), (436, 29795), (505, 25724), (545, 23836), (590, 22018), (1010, 12862), (1090, 11918), (1180, 11009), (2020, 6431), (2180, 5959)]