81204788

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{761}}^1$

素因数の和:912

約数の個数: 48

約数和(自身を含む): 168639744

約数和(自身を除く): 87434956

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 103, 148, 206, 259, 412, 518, 721, 761, 1036, 1442, 1522, 2884, 3044, 3811, 5327, 7622, 10654, 15244, 21308, 26677, 28157, 53354, 56314, 78383, 106708, 112628, 156766, 197099, 313532, 394198, 548681, 788396, 1097362, 2194724, 2900171, 5800342, 11600684, 20301197, 40602394, 81204788]

約数ペア:

[(1, 81204788), (2, 40602394), (4, 20301197), (7, 11600684), (14, 5800342), (28, 2900171), (37, 2194724), (74, 1097362), (103, 788396), (148, 548681), (206, 394198), (259, 313532), (412, 197099), (518, 156766), (721, 112628), (761, 106708), (1036, 78383), (1442, 56314), (1522, 53354), (2884, 28157), (3044, 26677), (3811, 21308), (5327, 15244), (7622, 10654)]