20421756

素因数分解:

$2^2\times 3^2\times {\mathrm{353}}^1\times {\mathrm{1607}}^1$

素因数の和:1970

約数の個数: 36

約数和(自身を含む): 51800112

約数和(自身を除く): 31378356

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 353, 706, 1059, 1412, 1607, 2118, 3177, 3214, 4236, 4821, 6354, 6428, 9642, 12708, 14463, 19284, 28926, 57852, 567271, 1134542, 1701813, 2269084, 3403626, 5105439, 6807252, 10210878, 20421756]

約数ペア:

[(1, 20421756), (2, 10210878), (3, 6807252), (4, 5105439), (6, 3403626), (9, 2269084), (12, 1701813), (18, 1134542), (36, 567271), (353, 57852), (706, 28926), (1059, 19284), (1412, 14463), (1607, 12708), (2118, 9642), (3177, 6428), (3214, 6354), (4236, 4821)]