86898520

素因数分解:

$2^3\times 5^1\times {\mathrm{997}}^1\times {\mathrm{2179}}^1$

素因数の和:3187

約数の個数: 32

約数和(自身を含む): 195807600

約数和(自身を除く): 108909080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 997, 1994, 2179, 3988, 4358, 4985, 7976, 8716, 9970, 10895, 17432, 19940, 21790, 39880, 43580, 87160, 2172463, 4344926, 8689852, 10862315, 17379704, 21724630, 43449260, 86898520]

約数ペア:

[(1, 86898520), (2, 43449260), (4, 21724630), (5, 17379704), (8, 10862315), (10, 8689852), (20, 4344926), (40, 2172463), (997, 87160), (1994, 43580), (2179, 39880), (3988, 21790), (4358, 19940), (4985, 17432), (7976, 10895), (8716, 9970)]