21556345

素因数分解:

$5^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1\times {\mathrm{409}}^1$

素因数の和:624

約数の個数: 16

約数和(自身を含む): 26449920

約数和(自身を除く): 4893575

約数列:

[1, 5, 83, 127, 409, 415, 635, 2045, 10541, 33947, 51943, 52705, 169735, 259715, 4311269, 21556345]

約数ペア:

[(1, 21556345), (5, 4311269), (83, 259715), (127, 169735), (409, 52705), (415, 51943), (635, 33947), (2045, 10541)]