12689140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37321}}^1$

素因数の和:37347

約数の個数: 24

約数和(自身を含む): 28215432

約数和(自身を除く): 15526292

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 37321, 74642, 149284, 186605, 373210, 634457, 746420, 1268914, 2537828, 3172285, 6344570, 12689140]

約数ペア:

[(1, 12689140), (2, 6344570), (4, 3172285), (5, 2537828), (10, 1268914), (17, 746420), (20, 634457), (34, 373210), (68, 186605), (85, 149284), (170, 74642), (340, 37321)]