81808688

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{393311}}^1$

素因数の和:393332

約数の個数: 20

約数和(自身を含む): 170697408

約数和(自身を除く): 88888720

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 393311, 786622, 1573244, 3146488, 5113043, 6292976, 10226086, 20452172, 40904344, 81808688]

約数ペア:

[(1, 81808688), (2, 40904344), (4, 20452172), (8, 10226086), (13, 6292976), (16, 5113043), (26, 3146488), (52, 1573244), (104, 786622), (208, 393311)]