25129900

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{3181}}^1$

素因数の和:3274

約数の個数: 36

約数和(自身を含む): 55239520

約数和(自身を除く): 30109620

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 3181, 3950, 6362, 7900, 12724, 15905, 31810, 63620, 79525, 159050, 251299, 318100, 502598, 1005196, 1256495, 2512990, 5025980, 6282475, 12564950, 25129900]

約数ペア:

[(1, 25129900), (2, 12564950), (4, 6282475), (5, 5025980), (10, 2512990), (20, 1256495), (25, 1005196), (50, 502598), (79, 318100), (100, 251299), (158, 159050), (316, 79525), (395, 63620), (790, 31810), (1580, 15905), (1975, 12724), (3181, 7900), (3950, 6362)]