261569390

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{571}}^1\times {\mathrm{2411}}^1$

素因数の和:3008

約数の個数: 32

約数和(自身を含む): 496679040

約数和(自身を除く): 235109650

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 571, 1142, 2411, 2855, 4822, 5710, 10849, 12055, 21698, 24110, 45809, 54245, 91618, 108490, 229045, 458090, 1376681, 2753362, 6883405, 13766810, 26156939, 52313878, 130784695, 261569390]

約数ペア:

[(1, 261569390), (2, 130784695), (5, 52313878), (10, 26156939), (19, 13766810), (38, 6883405), (95, 2753362), (190, 1376681), (571, 458090), (1142, 229045), (2411, 108490), (2855, 91618), (4822, 54245), (5710, 45809), (10849, 24110), (12055, 21698)]