21026578

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{193}}^1$

素因数の和:322

約数の個数: 32

約数和(自身を含む): 34640640

約数和(自身を除く): 13614062

約数列:

[1, 2, 19, 38, 47, 61, 94, 122, 193, 386, 893, 1159, 1786, 2318, 2867, 3667, 5734, 7334, 9071, 11773, 18142, 23546, 54473, 108946, 172349, 223687, 344698, 447374, 553331, 1106662, 10513289, 21026578]

約数ペア:

[(1, 21026578), (2, 10513289), (19, 1106662), (38, 553331), (47, 447374), (61, 344698), (94, 223687), (122, 172349), (193, 108946), (386, 54473), (893, 23546), (1159, 18142), (1786, 11773), (2318, 9071), (2867, 7334), (3667, 5734)]