21449799

素因数分解:

$3^3\times 7^2\times {\mathrm{31}}^1\times {\mathrm{523}}^1$

素因数の和:577

約数の個数: 48

約数和(自身を含む): 38231040

約数和(自身を除く): 16781241

約数列:

[1, 3, 7, 9, 21, 27, 31, 49, 63, 93, 147, 189, 217, 279, 441, 523, 651, 837, 1323, 1519, 1569, 1953, 3661, 4557, 4707, 5859, 10983, 13671, 14121, 16213, 25627, 32949, 41013, 48639, 76881, 98847, 113491, 145917, 230643, 340473, 437751, 691929, 794437, 1021419, 2383311, 3064257, 7149933, 21449799]

約数ペア:

[(1, 21449799), (3, 7149933), (7, 3064257), (9, 2383311), (21, 1021419), (27, 794437), (31, 691929), (49, 437751), (63, 340473), (93, 230643), (147, 145917), (189, 113491), (217, 98847), (279, 76881), (441, 48639), (523, 41013), (651, 32949), (837, 25627), (1323, 16213), (1519, 14121), (1569, 13671), (1953, 10983), (3661, 5859), (4557, 4707)]