81171940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{1237}}^1$

素因数の和:1456

約数の個数: 48

約数和(自身を含む): 181570032

約数和(自身を除く): 100398092

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 193, 340, 386, 772, 965, 1237, 1930, 2474, 3281, 3860, 4948, 6185, 6562, 12370, 13124, 16405, 21029, 24740, 32810, 42058, 65620, 84116, 105145, 210290, 238741, 420580, 477482, 954964, 1193705, 2387410, 4058597, 4774820, 8117194, 16234388, 20292985, 40585970, 81171940]

約数ペア:

[(1, 81171940), (2, 40585970), (4, 20292985), (5, 16234388), (10, 8117194), (17, 4774820), (20, 4058597), (34, 2387410), (68, 1193705), (85, 954964), (170, 477482), (193, 420580), (340, 238741), (386, 210290), (772, 105145), (965, 84116), (1237, 65620), (1930, 42058), (2474, 32810), (3281, 24740), (3860, 21029), (4948, 16405), (6185, 13124), (6562, 12370)]