20687628

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{101}}^2$

素因数の和:235

約数の個数: 54

約数和(自身を含む): 52792572

約数和(自身を除く): 32104944

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 101, 156, 169, 202, 303, 338, 404, 507, 606, 676, 1014, 1212, 1313, 2028, 2626, 3939, 5252, 7878, 10201, 15756, 17069, 20402, 30603, 34138, 40804, 51207, 61206, 68276, 102414, 122412, 132613, 204828, 265226, 397839, 530452, 795678, 1591356, 1723969, 3447938, 5171907, 6895876, 10343814, 20687628]

約数ペア:

[(1, 20687628), (2, 10343814), (3, 6895876), (4, 5171907), (6, 3447938), (12, 1723969), (13, 1591356), (26, 795678), (39, 530452), (52, 397839), (78, 265226), (101, 204828), (156, 132613), (169, 122412), (202, 102414), (303, 68276), (338, 61206), (404, 51207), (507, 40804), (606, 34138), (676, 30603), (1014, 20402), (1212, 17069), (1313, 15756), (2028, 10201), (2626, 7878), (3939, 5252)]