17990469

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{229}}^1$

素因数の和:314

約数の個数: 48

約数和(自身を含む): 31574400

約数和(自身を除く): 13583931

約数列:

[1, 3, 7, 9, 21, 29, 43, 63, 87, 129, 203, 229, 261, 301, 387, 609, 687, 903, 1247, 1603, 1827, 2061, 2709, 3741, 4809, 6641, 8729, 9847, 11223, 14427, 19923, 26187, 29541, 46487, 59769, 68929, 78561, 88623, 139461, 206787, 285563, 418383, 620361, 856689, 1998941, 2570067, 5996823, 17990469]

約数ペア:

[(1, 17990469), (3, 5996823), (7, 2570067), (9, 1998941), (21, 856689), (29, 620361), (43, 418383), (63, 285563), (87, 206787), (129, 139461), (203, 88623), (229, 78561), (261, 68929), (301, 59769), (387, 46487), (609, 29541), (687, 26187), (903, 19923), (1247, 14427), (1603, 11223), (1827, 9847), (2061, 8729), (2709, 6641), (3741, 4809)]