18782008

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{181}}^1$

素因数の和:320

約数の個数: 64

約数和(自身を含む): 43243200

約数和(自身を除く): 24461192

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 56, 68, 109, 119, 136, 181, 218, 238, 362, 436, 476, 724, 763, 872, 952, 1267, 1448, 1526, 1853, 2534, 3052, 3077, 3706, 5068, 6104, 6154, 7412, 10136, 12308, 12971, 14824, 19729, 21539, 24616, 25942, 39458, 43078, 51884, 78916, 86156, 103768, 138103, 157832, 172312, 276206, 335393, 552412, 670786, 1104824, 1341572, 2347751, 2683144, 4695502, 9391004, 18782008]

約数ペア:

[(1, 18782008), (2, 9391004), (4, 4695502), (7, 2683144), (8, 2347751), (14, 1341572), (17, 1104824), (28, 670786), (34, 552412), (56, 335393), (68, 276206), (109, 172312), (119, 157832), (136, 138103), (181, 103768), (218, 86156), (238, 78916), (362, 51884), (436, 43078), (476, 39458), (724, 25942), (763, 24616), (872, 21539), (952, 19729), (1267, 14824), (1448, 12971), (1526, 12308), (1853, 10136), (2534, 7412), (3052, 6154), (3077, 6104), (3706, 5068)]