19718478

素因数分解:

$2^1\times 3^5\times {\mathrm{13}}^1\times {\mathrm{3121}}^1$

素因数の和:3151

約数の個数: 48

約数和(自身を含む): 47729136

約数和(自身を除く): 28010658

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 81, 117, 162, 234, 243, 351, 486, 702, 1053, 2106, 3121, 3159, 6242, 6318, 9363, 18726, 28089, 40573, 56178, 81146, 84267, 121719, 168534, 243438, 252801, 365157, 505602, 730314, 758403, 1095471, 1516806, 2190942, 3286413, 6572826, 9859239, 19718478]

約数ペア:

[(1, 19718478), (2, 9859239), (3, 6572826), (6, 3286413), (9, 2190942), (13, 1516806), (18, 1095471), (26, 758403), (27, 730314), (39, 505602), (54, 365157), (78, 252801), (81, 243438), (117, 168534), (162, 121719), (234, 84267), (243, 81146), (351, 56178), (486, 40573), (702, 28089), (1053, 18726), (2106, 9363), (3121, 6318), (3159, 6242)]