21305538

素因数分解:

$2^1\times 3^3\times {\mathrm{71}}^1\times {\mathrm{5557}}^1$

素因数の和:5639

約数の個数: 32

約数和(自身を含む): 48021120

約数和(自身を除く): 26715582

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 71, 142, 213, 426, 639, 1278, 1917, 3834, 5557, 11114, 16671, 33342, 50013, 100026, 150039, 300078, 394547, 789094, 1183641, 2367282, 3550923, 7101846, 10652769, 21305538]

約数ペア:

[(1, 21305538), (2, 10652769), (3, 7101846), (6, 3550923), (9, 2367282), (18, 1183641), (27, 789094), (54, 394547), (71, 300078), (142, 150039), (213, 100026), (426, 50013), (639, 33342), (1278, 16671), (1917, 11114), (3834, 5557)]