21680168

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{239}}^1$

素因数の和:314

約数の個数: 64

約数和(自身を含む): 46656000

約数和(自身を除く): 24975832

約数列:

[1, 2, 4, 8, 17, 23, 29, 34, 46, 58, 68, 92, 116, 136, 184, 232, 239, 391, 478, 493, 667, 782, 956, 986, 1334, 1564, 1912, 1972, 2668, 3128, 3944, 4063, 5336, 5497, 6931, 8126, 10994, 11339, 13862, 16252, 21988, 22678, 27724, 32504, 43976, 45356, 55448, 90712, 93449, 117827, 159413, 186898, 235654, 318826, 373796, 471308, 637652, 747592, 942616, 1275304, 2710021, 5420042, 10840084, 21680168]

約数ペア:

[(1, 21680168), (2, 10840084), (4, 5420042), (8, 2710021), (17, 1275304), (23, 942616), (29, 747592), (34, 637652), (46, 471308), (58, 373796), (68, 318826), (92, 235654), (116, 186898), (136, 159413), (184, 117827), (232, 93449), (239, 90712), (391, 55448), (478, 45356), (493, 43976), (667, 32504), (782, 27724), (956, 22678), (986, 21988), (1334, 16252), (1564, 13862), (1912, 11339), (1972, 10994), (2668, 8126), (3128, 6931), (3944, 5497), (4063, 5336)]