21404416

素因数分解:

$2^8\times {\mathrm{11}}^2\times {\mathrm{691}}^1$

素因数の和:729

約数の個数: 54

約数和(自身を含む): 47030396

約数和(自身を除く): 25625980

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 121, 128, 176, 242, 256, 352, 484, 691, 704, 968, 1382, 1408, 1936, 2764, 2816, 3872, 5528, 7601, 7744, 11056, 15202, 15488, 22112, 30404, 30976, 44224, 60808, 83611, 88448, 121616, 167222, 176896, 243232, 334444, 486464, 668888, 972928, 1337776, 1945856, 2675552, 5351104, 10702208, 21404416]

約数ペア:

[(1, 21404416), (2, 10702208), (4, 5351104), (8, 2675552), (11, 1945856), (16, 1337776), (22, 972928), (32, 668888), (44, 486464), (64, 334444), (88, 243232), (121, 176896), (128, 167222), (176, 121616), (242, 88448), (256, 83611), (352, 60808), (484, 44224), (691, 30976), (704, 30404), (968, 22112), (1382, 15488), (1408, 15202), (1936, 11056), (2764, 7744), (2816, 7601), (3872, 5528)]