205121650

素因数分解:

$2^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{617}}^1$

素因数の和:799

約数の個数: 48

約数和(自身を含む): 391972680

約数和(自身を除く): 186851030

約数列:

[1, 2, 5, 10, 25, 50, 61, 109, 122, 218, 305, 545, 610, 617, 1090, 1234, 1525, 2725, 3050, 3085, 5450, 6170, 6649, 13298, 15425, 30850, 33245, 37637, 66490, 67253, 75274, 134506, 166225, 188185, 332450, 336265, 376370, 672530, 940925, 1681325, 1881850, 3362650, 4102433, 8204866, 20512165, 41024330, 102560825, 205121650]

約数ペア:

[(1, 205121650), (2, 102560825), (5, 41024330), (10, 20512165), (25, 8204866), (50, 4102433), (61, 3362650), (109, 1881850), (122, 1681325), (218, 940925), (305, 672530), (545, 376370), (610, 336265), (617, 332450), (1090, 188185), (1234, 166225), (1525, 134506), (2725, 75274), (3050, 67253), (3085, 66490), (5450, 37637), (6170, 33245), (6649, 30850), (13298, 15425)]