261600520

素因数分解:

$2^3\times 5^1\times {\mathrm{6540013}}^1$

素因数の和:6540024

約数の個数: 16

約数和(自身を含む): 588601260

約数和(自身を除く): 327000740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 6540013, 13080026, 26160052, 32700065, 52320104, 65400130, 130800260, 261600520]

約数ペア:

[(1, 261600520), (2, 130800260), (4, 65400130), (5, 52320104), (8, 32700065), (10, 26160052), (20, 13080026), (40, 6540013)]