20551428

素因数分解:

$2^2\times 3^3\times {\mathrm{37}}^2\times {\mathrm{139}}^1$

素因数の和:226

約数の個数: 72

約数和(自身を含む): 55154400

約数和(自身を除く): 34602972

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 37, 54, 74, 108, 111, 139, 148, 222, 278, 333, 417, 444, 556, 666, 834, 999, 1251, 1332, 1369, 1668, 1998, 2502, 2738, 3753, 3996, 4107, 5004, 5143, 5476, 7506, 8214, 10286, 12321, 15012, 15429, 16428, 20572, 24642, 30858, 36963, 46287, 49284, 61716, 73926, 92574, 138861, 147852, 185148, 190291, 277722, 380582, 555444, 570873, 761164, 1141746, 1712619, 2283492, 3425238, 5137857, 6850476, 10275714, 20551428]

約数ペア:

[(1, 20551428), (2, 10275714), (3, 6850476), (4, 5137857), (6, 3425238), (9, 2283492), (12, 1712619), (18, 1141746), (27, 761164), (36, 570873), (37, 555444), (54, 380582), (74, 277722), (108, 190291), (111, 185148), (139, 147852), (148, 138861), (222, 92574), (278, 73926), (333, 61716), (417, 49284), (444, 46287), (556, 36963), (666, 30858), (834, 24642), (999, 20572), (1251, 16428), (1332, 15429), (1369, 15012), (1668, 12321), (1998, 10286), (2502, 8214), (2738, 7506), (3753, 5476), (3996, 5143), (4107, 5004)]