25648720

素因数分解:

$2^4\times 5^1\times {\mathrm{320609}}^1$

素因数の和:320622

約数の個数: 20

約数和(自身を含む): 59633460

約数和(自身を除く): 33984740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 320609, 641218, 1282436, 1603045, 2564872, 3206090, 5129744, 6412180, 12824360, 25648720]

約数ペア:

[(1, 25648720), (2, 12824360), (4, 6412180), (5, 5129744), (8, 3206090), (10, 2564872), (16, 1603045), (20, 1282436), (40, 641218), (80, 320609)]