21287718

素因数分解:

$2^1\times 3^3\times {\mathrm{479}}^1\times {\mathrm{823}}^1$

素因数の和:1313

約数の個数: 32

約数和(自身を含む): 47462400

約数和(自身を除く): 26174682

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 479, 823, 958, 1437, 1646, 2469, 2874, 4311, 4938, 7407, 8622, 12933, 14814, 22221, 25866, 44442, 394217, 788434, 1182651, 2365302, 3547953, 7095906, 10643859, 21287718]

約数ペア:

[(1, 21287718), (2, 10643859), (3, 7095906), (6, 3547953), (9, 2365302), (18, 1182651), (27, 788434), (54, 394217), (479, 44442), (823, 25866), (958, 22221), (1437, 14814), (1646, 12933), (2469, 8622), (2874, 7407), (4311, 4938)]