25807720

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{8167}}^1$

素因数の和:8257

約数の個数: 32

約数和(自身を含む): 58809600

約数和(自身を除く): 33001880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 8167, 16334, 32668, 40835, 65336, 81670, 163340, 326680, 645193, 1290386, 2580772, 3225965, 5161544, 6451930, 12903860, 25807720]

約数ペア:

[(1, 25807720), (2, 12903860), (4, 6451930), (5, 5161544), (8, 3225965), (10, 2580772), (20, 1290386), (40, 645193), (79, 326680), (158, 163340), (316, 81670), (395, 65336), (632, 40835), (790, 32668), (1580, 16334), (3160, 8167)]