21223140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20807}}^1$

素因数の和:20836

約数の個数: 48

約数和(自身を含む): 62923392

約数和(自身を除く): 41700252

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 20807, 41614, 62421, 83228, 104035, 124842, 208070, 249684, 312105, 353719, 416140, 624210, 707438, 1061157, 1248420, 1414876, 1768595, 2122314, 3537190, 4244628, 5305785, 7074380, 10611570, 21223140]

約数ペア:

[(1, 21223140), (2, 10611570), (3, 7074380), (4, 5305785), (5, 4244628), (6, 3537190), (10, 2122314), (12, 1768595), (15, 1414876), (17, 1248420), (20, 1061157), (30, 707438), (34, 624210), (51, 416140), (60, 353719), (68, 312105), (85, 249684), (102, 208070), (170, 124842), (204, 104035), (255, 83228), (340, 62421), (510, 41614), (1020, 20807)]