81920255

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{6551}}^1$

素因数の和:6658

約数の個数: 16

約数和(自身を含む): 102368448

約数和(自身を除く): 20448193

約数列:

[1, 5, 41, 61, 205, 305, 2501, 6551, 12505, 32755, 268591, 399611, 1342955, 1998055, 16384051, 81920255]

約数ペア:

[(1, 81920255), (5, 16384051), (41, 1998055), (61, 1342955), (205, 399611), (305, 268591), (2501, 32755), (6551, 12505)]