78628620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{187211}}^1$

素因数の和:187230

約数の個数: 48

約数和(自身を含む): 251612928

約数和(自身を除く): 172984308

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 187211, 374422, 561633, 748844, 936055, 1123266, 1310477, 1872110, 2246532, 2620954, 2808165, 3744220, 3931431, 5241908, 5616330, 6552385, 7862862, 11232660, 13104770, 15725724, 19657155, 26209540, 39314310, 78628620]

約数ペア:

[(1, 78628620), (2, 39314310), (3, 26209540), (4, 19657155), (5, 15725724), (6, 13104770), (7, 11232660), (10, 7862862), (12, 6552385), (14, 5616330), (15, 5241908), (20, 3931431), (21, 3744220), (28, 2808165), (30, 2620954), (35, 2246532), (42, 1872110), (60, 1310477), (70, 1123266), (84, 936055), (105, 748844), (140, 561633), (210, 374422), (420, 187211)]