21121686

素因数分解:

$2^1\times 3^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{941}}^1$

素因数の和:1021

約数の個数: 48

約数和(自身を含む): 48494160

約数和(自身を除く): 27372474

約数列:

[1, 2, 3, 6, 9, 18, 29, 43, 58, 86, 87, 129, 174, 258, 261, 387, 522, 774, 941, 1247, 1882, 2494, 2823, 3741, 5646, 7482, 8469, 11223, 16938, 22446, 27289, 40463, 54578, 80926, 81867, 121389, 163734, 242778, 245601, 364167, 491202, 728334, 1173427, 2346854, 3520281, 7040562, 10560843, 21121686]

約数ペア:

[(1, 21121686), (2, 10560843), (3, 7040562), (6, 3520281), (9, 2346854), (18, 1173427), (29, 728334), (43, 491202), (58, 364167), (86, 245601), (87, 242778), (129, 163734), (174, 121389), (258, 81867), (261, 80926), (387, 54578), (522, 40463), (774, 27289), (941, 22446), (1247, 16938), (1882, 11223), (2494, 8469), (2823, 7482), (3741, 5646)]