21917788

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{2089}}^1$

素因数の和:2197

約数の個数: 24

約数和(自身を含む): 39910640

約数和(自身を除く): 17992852

約数列:

[1, 2, 4, 43, 61, 86, 122, 172, 244, 2089, 2623, 4178, 5246, 8356, 10492, 89827, 127429, 179654, 254858, 359308, 509716, 5479447, 10958894, 21917788]

約数ペア:

[(1, 21917788), (2, 10958894), (4, 5479447), (43, 509716), (61, 359308), (86, 254858), (122, 179654), (172, 127429), (244, 89827), (2089, 10492), (2623, 8356), (4178, 5246)]