19547913

素因数分解:

$3^1\times 7^3\times {\mathrm{11}}^2\times {\mathrm{157}}^1$

素因数の和:203

約数の個数: 48

約数和(自身を含む): 33622400

約数和(自身を除く): 14074487

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 121, 147, 157, 231, 343, 363, 471, 539, 847, 1029, 1099, 1617, 1727, 2541, 3297, 3773, 5181, 5929, 7693, 11319, 12089, 17787, 18997, 23079, 36267, 41503, 53851, 56991, 84623, 124509, 132979, 161553, 253869, 398937, 592361, 930853, 1777083, 2792559, 6515971, 19547913]

約数ペア:

[(1, 19547913), (3, 6515971), (7, 2792559), (11, 1777083), (21, 930853), (33, 592361), (49, 398937), (77, 253869), (121, 161553), (147, 132979), (157, 124509), (231, 84623), (343, 56991), (363, 53851), (471, 41503), (539, 36267), (847, 23079), (1029, 18997), (1099, 17787), (1617, 12089), (1727, 11319), (2541, 7693), (3297, 5929), (3773, 5181)]