2640620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6949}}^1$

素因数の和:6977

約数の個数: 24

約数和(自身を含む): 5838000

約数和(自身を除く): 3197380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 6949, 13898, 27796, 34745, 69490, 132031, 138980, 264062, 528124, 660155, 1320310, 2640620]

約数ペア:

[(1, 2640620), (2, 1320310), (4, 660155), (5, 528124), (10, 264062), (19, 138980), (20, 132031), (38, 69490), (76, 34745), (95, 27796), (190, 13898), (380, 6949)]