21491872

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{16381}}^1$

素因数の和:16432

約数の個数: 24

約数和(自身を含む): 43346772

約数和(自身を除く): 21854900

約数列:

[1, 2, 4, 8, 16, 32, 41, 82, 164, 328, 656, 1312, 16381, 32762, 65524, 131048, 262096, 524192, 671621, 1343242, 2686484, 5372968, 10745936, 21491872]

約数ペア:

[(1, 21491872), (2, 10745936), (4, 5372968), (8, 2686484), (16, 1343242), (32, 671621), (41, 524192), (82, 262096), (164, 131048), (328, 65524), (656, 32762), (1312, 16381)]