21921669

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{4519}}^1$

素因数の和:4550

約数の個数: 36

約数和(自身を含む): 40191840

約数和(自身を除く): 18270171

約数列:

[1, 3, 7, 9, 11, 21, 33, 49, 63, 77, 99, 147, 231, 441, 539, 693, 1617, 4519, 4851, 13557, 31633, 40671, 49709, 94899, 149127, 221431, 284697, 347963, 447381, 664293, 1043889, 1992879, 2435741, 3131667, 7307223, 21921669]

約数ペア:

[(1, 21921669), (3, 7307223), (7, 3131667), (9, 2435741), (11, 1992879), (21, 1043889), (33, 664293), (49, 447381), (63, 347963), (77, 284697), (99, 221431), (147, 149127), (231, 94899), (441, 49709), (539, 40671), (693, 31633), (1617, 13557), (4519, 4851)]