13000720

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1609}}^1$

素因数の和:1723

約数の個数: 40

約数和(自身を含む): 30544920

約数和(自身を除く): 17544200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1609, 1616, 2020, 3218, 4040, 6436, 8045, 8080, 12872, 16090, 25744, 32180, 64360, 128720, 162509, 325018, 650036, 812545, 1300072, 1625090, 2600144, 3250180, 6500360, 13000720]

約数ペア:

[(1, 13000720), (2, 6500360), (4, 3250180), (5, 2600144), (8, 1625090), (10, 1300072), (16, 812545), (20, 650036), (40, 325018), (80, 162509), (101, 128720), (202, 64360), (404, 32180), (505, 25744), (808, 16090), (1010, 12872), (1609, 8080), (1616, 8045), (2020, 6436), (3218, 4040)]