21056864

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{587}}^1$

素因数の和:675

約数の個数: 48

約数和(自身を含む): 44452800

約数和(自身を除く): 23395936

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 59, 76, 118, 152, 236, 304, 472, 587, 608, 944, 1121, 1174, 1888, 2242, 2348, 4484, 4696, 8968, 9392, 11153, 17936, 18784, 22306, 34633, 35872, 44612, 69266, 89224, 138532, 178448, 277064, 356896, 554128, 658027, 1108256, 1316054, 2632108, 5264216, 10528432, 21056864]

約数ペア:

[(1, 21056864), (2, 10528432), (4, 5264216), (8, 2632108), (16, 1316054), (19, 1108256), (32, 658027), (38, 554128), (59, 356896), (76, 277064), (118, 178448), (152, 138532), (236, 89224), (304, 69266), (472, 44612), (587, 35872), (608, 34633), (944, 22306), (1121, 18784), (1174, 17936), (1888, 11153), (2242, 9392), (2348, 8968), (4484, 4696)]