20197155

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{1123}}^1$

素因数の和:1251

約数の個数: 32

約数和(自身を含む): 35608320

約数和(自身を除く): 15411165

約数列:

[1, 3, 5, 11, 15, 33, 55, 109, 165, 327, 545, 1123, 1199, 1635, 3369, 3597, 5615, 5995, 12353, 16845, 17985, 37059, 61765, 122407, 185295, 367221, 612035, 1346477, 1836105, 4039431, 6732385, 20197155]

約数ペア:

[(1, 20197155), (3, 6732385), (5, 4039431), (11, 1836105), (15, 1346477), (33, 612035), (55, 367221), (109, 185295), (165, 122407), (327, 61765), (545, 37059), (1123, 17985), (1199, 16845), (1635, 12353), (3369, 5995), (3597, 5615)]