25928720

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{3209}}^1$

素因数の和:3323

約数の個数: 40

約数和(自身を含む): 60900120

約数和(自身を除く): 34971400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 3209, 4040, 6418, 8080, 12836, 16045, 25672, 32090, 51344, 64180, 128360, 256720, 324109, 648218, 1296436, 1620545, 2592872, 3241090, 5185744, 6482180, 12964360, 25928720]

約数ペア:

[(1, 25928720), (2, 12964360), (4, 6482180), (5, 5185744), (8, 3241090), (10, 2592872), (16, 1620545), (20, 1296436), (40, 648218), (80, 324109), (101, 256720), (202, 128360), (404, 64180), (505, 51344), (808, 32090), (1010, 25672), (1616, 16045), (2020, 12836), (3209, 8080), (4040, 6418)]