12640700

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{6653}}^1$

素因数の和:6686

約数の個数: 36

約数和(自身を含む): 28878360

約数和(自身を除く): 16237660

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 380, 475, 950, 1900, 6653, 13306, 26612, 33265, 66530, 126407, 133060, 166325, 252814, 332650, 505628, 632035, 665300, 1264070, 2528140, 3160175, 6320350, 12640700]

約数ペア:

[(1, 12640700), (2, 6320350), (4, 3160175), (5, 2528140), (10, 1264070), (19, 665300), (20, 632035), (25, 505628), (38, 332650), (50, 252814), (76, 166325), (95, 133060), (100, 126407), (190, 66530), (380, 33265), (475, 26612), (950, 13306), (1900, 6653)]