78921220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{563723}}^1$

素因数の和:563739

約数の個数: 24

約数和(自身を含む): 189411264

約数和(自身を除く): 110490044

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 563723, 1127446, 2254892, 2818615, 3946061, 5637230, 7892122, 11274460, 15784244, 19730305, 39460610, 78921220]

約数ペア:

[(1, 78921220), (2, 39460610), (4, 19730305), (5, 15784244), (7, 11274460), (10, 7892122), (14, 5637230), (20, 3946061), (28, 2818615), (35, 2254892), (70, 1127446), (140, 563723)]