19918353

素因数分解:

$3^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{1489}}^1$

素因数の和:1526

約数の個数: 32

約数和(自身を含む): 33376000

約数和(自身を除く): 13457647

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 343, 637, 1029, 1489, 1911, 4459, 4467, 10423, 13377, 19357, 31269, 58071, 72961, 135499, 218883, 406497, 510727, 948493, 1532181, 2845479, 6639451, 19918353]

約数ペア:

[(1, 19918353), (3, 6639451), (7, 2845479), (13, 1532181), (21, 948493), (39, 510727), (49, 406497), (91, 218883), (147, 135499), (273, 72961), (343, 58071), (637, 31269), (1029, 19357), (1489, 13377), (1911, 10423), (4459, 4467)]