18813771

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{563}}^1$

素因数の和:695

約数の個数: 24

約数和(自身を含む): 28154880

約数和(自身を除く): 9341109

約数列:

[1, 3, 9, 47, 79, 141, 237, 423, 563, 711, 1689, 3713, 5067, 11139, 26461, 33417, 44477, 79383, 133431, 238149, 400293, 2090419, 6271257, 18813771]

約数ペア:

[(1, 18813771), (3, 6271257), (9, 2090419), (47, 400293), (79, 238149), (141, 133431), (237, 79383), (423, 44477), (563, 33417), (711, 26461), (1689, 11139), (3713, 5067)]