21589985

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{241}}^1$

素因数の和:329

約数の個数: 32

約数和(自身を含む): 29272320

約数和(自身を除く): 7682335

約数列:

[1, 5, 19, 23, 41, 95, 115, 205, 241, 437, 779, 943, 1205, 2185, 3895, 4579, 4715, 5543, 9881, 17917, 22895, 27715, 49405, 89585, 105317, 187739, 227263, 526585, 938695, 1136315, 4317997, 21589985]

約数ペア:

[(1, 21589985), (5, 4317997), (19, 1136315), (23, 938695), (41, 526585), (95, 227263), (115, 187739), (205, 105317), (241, 89585), (437, 49405), (779, 27715), (943, 22895), (1205, 17917), (2185, 9881), (3895, 5543), (4579, 4715)]