20990028

素因数分解:

$2^2\times 3^1\times {\mathrm{67}}^1\times {\mathrm{26107}}^1$

素因数の和:26181

約数の個数: 24

約数和(自身を含む): 49709632

約数和(自身を除く): 28719604

約数列:

[1, 2, 3, 4, 6, 12, 67, 134, 201, 268, 402, 804, 26107, 52214, 78321, 104428, 156642, 313284, 1749169, 3498338, 5247507, 6996676, 10495014, 20990028]

約数ペア:

[(1, 20990028), (2, 10495014), (3, 6996676), (4, 5247507), (6, 3498338), (12, 1749169), (67, 313284), (134, 156642), (201, 104428), (268, 78321), (402, 52214), (804, 26107)]