20283051280

素因数分解:

$2^4\times 5^1\times {\mathrm{389}}^1\times {\mathrm{651769}}^1$

素因数の和:652171

約数の個数: 40

約数和(自身を含む): 47279395800

約数和(自身を除く): 26996344520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 389, 778, 1556, 1945, 3112, 3890, 6224, 7780, 15560, 31120, 651769, 1303538, 2607076, 3258845, 5214152, 6517690, 10428304, 13035380, 26070760, 52141520, 253538141, 507076282, 1014152564, 1267690705, 2028305128, 2535381410, 4056610256, 5070762820, 10141525640, 20283051280]

約数ペア:

[(1, 20283051280), (2, 10141525640), (4, 5070762820), (5, 4056610256), (8, 2535381410), (10, 2028305128), (16, 1267690705), (20, 1014152564), (40, 507076282), (80, 253538141), (389, 52141520), (778, 26070760), (1556, 13035380), (1945, 10428304), (3112, 6517690), (3890, 5214152), (6224, 3258845), (7780, 2607076), (15560, 1303538), (31120, 651769)]