81920553

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{397}}^1$

素因数の和:474

約数の個数: 48

約数和(自身を含む): 132849216

約数和(自身を除く): 50928663

約数列:

[1, 3, 11, 13, 33, 37, 39, 111, 143, 169, 397, 407, 429, 481, 507, 1191, 1221, 1443, 1859, 4367, 5161, 5291, 5577, 6253, 13101, 14689, 15483, 15873, 18759, 44067, 56771, 67093, 68783, 161579, 170313, 190957, 201279, 206349, 484737, 572871, 738023, 2100527, 2214069, 2482441, 6301581, 7447323, 27306851, 81920553]

約数ペア:

[(1, 81920553), (3, 27306851), (11, 7447323), (13, 6301581), (33, 2482441), (37, 2214069), (39, 2100527), (111, 738023), (143, 572871), (169, 484737), (397, 206349), (407, 201279), (429, 190957), (481, 170313), (507, 161579), (1191, 68783), (1221, 67093), (1443, 56771), (1859, 44067), (4367, 18759), (5161, 15873), (5291, 15483), (5577, 14689), (6253, 13101)]