17931980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{81509}}^1$

素因数の和:81529

約数の個数: 24

約数和(自身を含む): 41081040

約数和(自身を除く): 23149060

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 81509, 163018, 326036, 407545, 815090, 896599, 1630180, 1793198, 3586396, 4482995, 8965990, 17931980]

約数ペア:

[(1, 17931980), (2, 8965990), (4, 4482995), (5, 3586396), (10, 1793198), (11, 1630180), (20, 896599), (22, 815090), (44, 407545), (55, 326036), (110, 163018), (220, 81509)]