25120720

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{3109}}^1$

素因数の和:3223

約数の個数: 40

約数和(自身を含む): 59002920

約数和(自身を除く): 33882200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 3109, 4040, 6218, 8080, 12436, 15545, 24872, 31090, 49744, 62180, 124360, 248720, 314009, 628018, 1256036, 1570045, 2512072, 3140090, 5024144, 6280180, 12560360, 25120720]

約数ペア:

[(1, 25120720), (2, 12560360), (4, 6280180), (5, 5024144), (8, 3140090), (10, 2512072), (16, 1570045), (20, 1256036), (40, 628018), (80, 314009), (101, 248720), (202, 124360), (404, 62180), (505, 49744), (808, 31090), (1010, 24872), (1616, 15545), (2020, 12436), (3109, 8080), (4040, 6218)]