21725716

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{227}}^1\times {\mathrm{337}}^1$

素因数の和:639

約数の個数: 24

約数和(自身を含む): 38840256

約数和(自身を除く): 17114540

約数列:

[1, 2, 4, 71, 142, 227, 284, 337, 454, 674, 908, 1348, 16117, 23927, 32234, 47854, 64468, 76499, 95708, 152998, 305996, 5431429, 10862858, 21725716]

約数ペア:

[(1, 21725716), (2, 10862858), (4, 5431429), (71, 305996), (142, 152998), (227, 95708), (284, 76499), (337, 64468), (454, 47854), (674, 32234), (908, 23927), (1348, 16117)]