25981240

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:280

約数の個数: 64

約数和(自身を含む): 60588000

約数和(自身を除く): 34606760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 101, 109, 118, 202, 218, 236, 295, 404, 436, 472, 505, 545, 590, 808, 872, 1010, 1090, 1180, 2020, 2180, 2360, 4040, 4360, 5959, 6431, 11009, 11918, 12862, 22018, 23836, 25724, 29795, 32155, 44036, 47672, 51448, 55045, 59590, 64310, 88072, 110090, 119180, 128620, 220180, 238360, 257240, 440360, 649531, 1299062, 2598124, 3247655, 5196248, 6495310, 12990620, 25981240]

約数ペア:

[(1, 25981240), (2, 12990620), (4, 6495310), (5, 5196248), (8, 3247655), (10, 2598124), (20, 1299062), (40, 649531), (59, 440360), (101, 257240), (109, 238360), (118, 220180), (202, 128620), (218, 119180), (236, 110090), (295, 88072), (404, 64310), (436, 59590), (472, 55045), (505, 51448), (545, 47672), (590, 44036), (808, 32155), (872, 29795), (1010, 25724), (1090, 23836), (1180, 22018), (2020, 12862), (2180, 11918), (2360, 11009), (4040, 6431), (4360, 5959)]