640411148

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{724447}}^1$

素因数の和:724481

約数の個数: 24

約数和(自身を含む): 1277926272

約数和(自身を除く): 637515124

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 221, 442, 884, 724447, 1448894, 2897788, 9417811, 12315599, 18835622, 24631198, 37671244, 49262396, 160102787, 320205574, 640411148]

約数ペア:

[(1, 640411148), (2, 320205574), (4, 160102787), (13, 49262396), (17, 37671244), (26, 24631198), (34, 18835622), (52, 12315599), (68, 9417811), (221, 2897788), (442, 1448894), (884, 724447)]