21000923140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61767421}}^1$

素因数の和:61767447

約数の個数: 24

約数和(自身を含む): 46696171032

約数和(自身を除く): 25695247892

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 61767421, 123534842, 247069684, 308837105, 617674210, 1050046157, 1235348420, 2100092314, 4200184628, 5250230785, 10500461570, 21000923140]

約数ペア:

[(1, 21000923140), (2, 10500461570), (4, 5250230785), (5, 4200184628), (10, 2100092314), (17, 1235348420), (20, 1050046157), (34, 617674210), (68, 308837105), (85, 247069684), (170, 123534842), (340, 61767421)]