21398852

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{2297}}^1$

素因数の和:2455

約数の個数: 24

約数和(自身を含む): 39957624

約数和(自身を除く): 18558772

約数列:

[1, 2, 4, 17, 34, 68, 137, 274, 548, 2297, 2329, 4594, 4658, 9188, 9316, 39049, 78098, 156196, 314689, 629378, 1258756, 5349713, 10699426, 21398852]

約数ペア:

[(1, 21398852), (2, 10699426), (4, 5349713), (17, 1258756), (34, 629378), (68, 314689), (137, 156196), (274, 78098), (548, 39049), (2297, 9316), (2329, 9188), (4594, 4658)]