19394739

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1$

素因数の和:249

約数の個数: 72

約数和(自身を含む): 37346400

約数和(自身を除く): 17951661

約数列:

[1, 3, 7, 9, 13, 17, 21, 39, 49, 51, 63, 91, 117, 119, 147, 153, 199, 221, 273, 357, 441, 597, 637, 663, 819, 833, 1071, 1393, 1547, 1791, 1911, 1989, 2499, 2587, 3383, 4179, 4641, 5733, 7497, 7761, 9751, 10149, 10829, 12537, 13923, 18109, 23283, 23681, 29253, 30447, 32487, 43979, 54327, 71043, 87759, 97461, 126763, 131937, 162981, 165767, 213129, 307853, 380289, 395811, 497301, 923559, 1140867, 1491903, 2154971, 2770677, 6464913, 19394739]

約数ペア:

[(1, 19394739), (3, 6464913), (7, 2770677), (9, 2154971), (13, 1491903), (17, 1140867), (21, 923559), (39, 497301), (49, 395811), (51, 380289), (63, 307853), (91, 213129), (117, 165767), (119, 162981), (147, 131937), (153, 126763), (199, 97461), (221, 87759), (273, 71043), (357, 54327), (441, 43979), (597, 32487), (637, 30447), (663, 29253), (819, 23681), (833, 23283), (1071, 18109), (1393, 13923), (1547, 12537), (1791, 10829), (1911, 10149), (1989, 9751), (2499, 7761), (2587, 7497), (3383, 5733), (4179, 4641)]