68788990

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{77291}}^1$

素因数の和:77387

約数の個数: 16

約数和(自身を含む): 125213040

約数和(自身を除く): 56424050

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 77291, 154582, 386455, 772910, 6878899, 13757798, 34394495, 68788990]

約数ペア:

[(1, 68788990), (2, 34394495), (5, 13757798), (10, 6878899), (89, 772910), (178, 386455), (445, 154582), (890, 77291)]