81162320

素因数分解:

$2^4\times 5^1\times {\mathrm{439}}^1\times {\mathrm{2311}}^1$

素因数の和:2763

約数の個数: 40

約数和(自身を含む): 189214080

約数和(自身を除く): 108051760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 439, 878, 1756, 2195, 2311, 3512, 4390, 4622, 7024, 8780, 9244, 11555, 17560, 18488, 23110, 35120, 36976, 46220, 92440, 184880, 1014529, 2029058, 4058116, 5072645, 8116232, 10145290, 16232464, 20290580, 40581160, 81162320]

約数ペア:

[(1, 81162320), (2, 40581160), (4, 20290580), (5, 16232464), (8, 10145290), (10, 8116232), (16, 5072645), (20, 4058116), (40, 2029058), (80, 1014529), (439, 184880), (878, 92440), (1756, 46220), (2195, 36976), (2311, 35120), (3512, 23110), (4390, 18488), (4622, 17560), (7024, 11555), (8780, 9244)]