19940596

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 39513600

約数和(自身を除く): 19573004

約数列:

[1, 2, 4, 13, 26, 41, 47, 52, 82, 94, 164, 188, 199, 398, 533, 611, 796, 1066, 1222, 1927, 2132, 2444, 2587, 3854, 5174, 7708, 8159, 9353, 10348, 16318, 18706, 25051, 32636, 37412, 50102, 100204, 106067, 121589, 212134, 243178, 383473, 424268, 486356, 766946, 1533892, 4985149, 9970298, 19940596]

約数ペア:

[(1, 19940596), (2, 9970298), (4, 4985149), (13, 1533892), (26, 766946), (41, 486356), (47, 424268), (52, 383473), (82, 243178), (94, 212134), (164, 121589), (188, 106067), (199, 100204), (398, 50102), (533, 37412), (611, 32636), (796, 25051), (1066, 18706), (1222, 16318), (1927, 10348), (2132, 9353), (2444, 8159), (2587, 7708), (3854, 5174)]