1851220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{1889}}^1$

素因数の和:1912

約数の個数: 36

約数和(自身を含む): 4524660

約数和(自身を除く): 2673440

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 1889, 3778, 7556, 9445, 13223, 18890, 26446, 37780, 52892, 66115, 92561, 132230, 185122, 264460, 370244, 462805, 925610, 1851220]

約数ペア:

[(1, 1851220), (2, 925610), (4, 462805), (5, 370244), (7, 264460), (10, 185122), (14, 132230), (20, 92561), (28, 66115), (35, 52892), (49, 37780), (70, 26446), (98, 18890), (140, 13223), (196, 9445), (245, 7556), (490, 3778), (980, 1889)]