128740060

素因数分解:

$2^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{9949}}^1$

素因数の和:10605

約数の個数: 24

約数和(自身を含む): 270799200

約数和(自身を除く): 142059140

約数列:

[1, 2, 4, 5, 10, 20, 647, 1294, 2588, 3235, 6470, 9949, 12940, 19898, 39796, 49745, 99490, 198980, 6437003, 12874006, 25748012, 32185015, 64370030, 128740060]

約数ペア:

[(1, 128740060), (2, 64370030), (4, 32185015), (5, 25748012), (10, 12874006), (20, 6437003), (647, 198980), (1294, 99490), (2588, 49745), (3235, 39796), (6470, 19898), (9949, 12940)]