2687551820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{139831}}^1$

素因数の和:139902

約数の個数: 36

約数和(自身を含む): 5831833392

約数和(自身を除く): 3144281572

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 961, 1922, 3844, 4805, 9610, 19220, 139831, 279662, 559324, 699155, 1398310, 2796620, 4334761, 8669522, 17339044, 21673805, 43347610, 86695220, 134377591, 268755182, 537510364, 671887955, 1343775910, 2687551820]

約数ペア:

[(1, 2687551820), (2, 1343775910), (4, 671887955), (5, 537510364), (10, 268755182), (20, 134377591), (31, 86695220), (62, 43347610), (124, 21673805), (155, 17339044), (310, 8669522), (620, 4334761), (961, 2796620), (1922, 1398310), (3844, 699155), (4805, 559324), (9610, 279662), (19220, 139831)]