20387805

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{433}}^1$

素因数の和:557

約数の個数: 32

約数和(自身を含む): 33914496

約数和(自身を除く): 13526691

約数列:

[1, 3, 5, 15, 43, 73, 129, 215, 219, 365, 433, 645, 1095, 1299, 2165, 3139, 6495, 9417, 15695, 18619, 31609, 47085, 55857, 93095, 94827, 158045, 279285, 474135, 1359187, 4077561, 6795935, 20387805]

約数ペア:

[(1, 20387805), (3, 6795935), (5, 4077561), (15, 1359187), (43, 474135), (73, 279285), (129, 158045), (215, 94827), (219, 93095), (365, 55857), (433, 47085), (645, 31609), (1095, 18619), (1299, 15695), (2165, 9417), (3139, 6495)]