320895655

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1$

素因数の和:280

約数の個数: 64

約数和(自身を含む): 459095040

約数和(自身を除く): 138199385

約数列:

[1, 5, 17, 19, 23, 53, 85, 95, 115, 163, 265, 323, 391, 437, 815, 901, 1007, 1219, 1615, 1955, 2185, 2771, 3097, 3749, 4505, 5035, 6095, 7429, 8639, 13855, 15485, 17119, 18745, 20723, 23161, 37145, 43195, 52649, 63733, 71231, 85595, 103615, 115805, 146863, 164141, 198697, 263245, 318665, 356155, 393737, 734315, 820705, 993485, 1210927, 1968685, 2790397, 3377849, 3775243, 6054635, 13951985, 16889245, 18876215, 64179131, 320895655]

約数ペア:

[(1, 320895655), (5, 64179131), (17, 18876215), (19, 16889245), (23, 13951985), (53, 6054635), (85, 3775243), (95, 3377849), (115, 2790397), (163, 1968685), (265, 1210927), (323, 993485), (391, 820705), (437, 734315), (815, 393737), (901, 356155), (1007, 318665), (1219, 263245), (1615, 198697), (1955, 164141), (2185, 146863), (2771, 115805), (3097, 103615), (3749, 85595), (4505, 71231), (5035, 63733), (6095, 52649), (7429, 43195), (8639, 37145), (13855, 23161), (15485, 20723), (17119, 18745)]