28779513

素因数分解:

$3^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 47551680

約数和(自身を除く): 18772167

約数列:

[1, 3, 7, 21, 29, 43, 49, 87, 129, 147, 157, 203, 301, 471, 609, 903, 1099, 1247, 1421, 2107, 3297, 3741, 4263, 4553, 6321, 6751, 7693, 8729, 13659, 20253, 23079, 26187, 31871, 47257, 61103, 95613, 141771, 183309, 195779, 223097, 330799, 587337, 669291, 992397, 1370453, 4111359, 9593171, 28779513]

約数ペア:

[(1, 28779513), (3, 9593171), (7, 4111359), (21, 1370453), (29, 992397), (43, 669291), (49, 587337), (87, 330799), (129, 223097), (147, 195779), (157, 183309), (203, 141771), (301, 95613), (471, 61103), (609, 47257), (903, 31871), (1099, 26187), (1247, 23079), (1421, 20253), (2107, 13659), (3297, 8729), (3741, 7693), (4263, 6751), (4553, 6321)]