20638228

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{2897}}^1$

素因数の和:3051

約数の個数: 24

約数和(自身を含む): 39192552

約数和(自身を除く): 18554324

約数列:

[1, 2, 4, 13, 26, 52, 137, 274, 548, 1781, 2897, 3562, 5794, 7124, 11588, 37661, 75322, 150644, 396889, 793778, 1587556, 5159557, 10319114, 20638228]

約数ペア:

[(1, 20638228), (2, 10319114), (4, 5159557), (13, 1587556), (26, 793778), (52, 396889), (137, 150644), (274, 75322), (548, 37661), (1781, 11588), (2897, 7124), (3562, 5794)]