21028876

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{12917}}^1$

素因数の和:12969

約数の個数: 24

約数和(自身を含む): 41234256

約数和(自身を除く): 20205380

約数列:

[1, 2, 4, 11, 22, 37, 44, 74, 148, 407, 814, 1628, 12917, 25834, 51668, 142087, 284174, 477929, 568348, 955858, 1911716, 5257219, 10514438, 21028876]

約数ペア:

[(1, 21028876), (2, 10514438), (4, 5257219), (11, 1911716), (22, 955858), (37, 568348), (44, 477929), (74, 284174), (148, 142087), (407, 51668), (814, 25834), (1628, 12917)]