2019440217020

素因数分解:

$2^2\times 5^1\times {\mathrm{127921}}^1\times {\mathrm{789331}}^1$

素因数の和:917261

約数の個数: 24

約数和(自身を含む): 4240862980368

約数和(自身を除く): 2221422763348

約数列:

[1, 2, 4, 5, 10, 20, 127921, 255842, 511684, 639605, 789331, 1279210, 1578662, 2558420, 3157324, 3946655, 7893310, 15786620, 100972010851, 201944021702, 403888043404, 504860054255, 1009720108510, 2019440217020]

約数ペア:

[(1, 2019440217020), (2, 1009720108510), (4, 504860054255), (5, 403888043404), (10, 201944021702), (20, 100972010851), (127921, 15786620), (255842, 7893310), (511684, 3946655), (639605, 3157324), (789331, 2558420), (1279210, 1578662)]