81820660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{10463}}^1$

素因数の和:10512

約数の個数: 48

約数和(自身を含む): 189858816

約数和(自身を除く): 108038156

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 46, 68, 85, 92, 115, 170, 230, 340, 391, 460, 782, 1564, 1955, 3910, 7820, 10463, 20926, 41852, 52315, 104630, 177871, 209260, 240649, 355742, 481298, 711484, 889355, 962596, 1203245, 1778710, 2406490, 3557420, 4091033, 4812980, 8182066, 16364132, 20455165, 40910330, 81820660]

約数ペア:

[(1, 81820660), (2, 40910330), (4, 20455165), (5, 16364132), (10, 8182066), (17, 4812980), (20, 4091033), (23, 3557420), (34, 2406490), (46, 1778710), (68, 1203245), (85, 962596), (92, 889355), (115, 711484), (170, 481298), (230, 355742), (340, 240649), (391, 209260), (460, 177871), (782, 104630), (1564, 52315), (1955, 41852), (3910, 20926), (7820, 10463)]