21737478

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{691}}^1$

素因数の和:817

約数の個数: 48

約数和(自身を含む): 51119424

約数和(自身を除く): 29381946

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 107, 147, 214, 294, 321, 642, 691, 749, 1382, 1498, 2073, 2247, 4146, 4494, 4837, 5243, 9674, 10486, 14511, 15729, 29022, 31458, 33859, 67718, 73937, 101577, 147874, 203154, 221811, 443622, 517559, 1035118, 1552677, 3105354, 3622913, 7245826, 10868739, 21737478]

約数ペア:

[(1, 21737478), (2, 10868739), (3, 7245826), (6, 3622913), (7, 3105354), (14, 1552677), (21, 1035118), (42, 517559), (49, 443622), (98, 221811), (107, 203154), (147, 147874), (214, 101577), (294, 73937), (321, 67718), (642, 33859), (691, 31458), (749, 29022), (1382, 15729), (1498, 14511), (2073, 10486), (2247, 9674), (4146, 5243), (4494, 4837)]