28990120

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31511}}^1$

素因数の和:31545

約数の個数: 32

約数和(自身を含む): 68065920

約数和(自身を除く): 39075800

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 31511, 63022, 126044, 157555, 252088, 315110, 630220, 724753, 1260440, 1449506, 2899012, 3623765, 5798024, 7247530, 14495060, 28990120]

約数ペア:

[(1, 28990120), (2, 14495060), (4, 7247530), (5, 5798024), (8, 3623765), (10, 2899012), (20, 1449506), (23, 1260440), (40, 724753), (46, 630220), (92, 315110), (115, 252088), (184, 157555), (230, 126044), (460, 63022), (920, 31511)]