18735057

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:232

約数の個数: 48

約数和(自身を含む): 31519488

約数和(自身を除く): 12784431

約数列:

[1, 3, 9, 11, 27, 33, 43, 81, 99, 129, 163, 243, 297, 387, 473, 489, 891, 1161, 1419, 1467, 1793, 2673, 3483, 4257, 4401, 5379, 7009, 10449, 12771, 13203, 16137, 21027, 38313, 39609, 48411, 63081, 77099, 114939, 145233, 189243, 231297, 435699, 567729, 693891, 1703187, 2081673, 6245019, 18735057]

約数ペア:

[(1, 18735057), (3, 6245019), (9, 2081673), (11, 1703187), (27, 693891), (33, 567729), (43, 435699), (81, 231297), (99, 189243), (129, 145233), (163, 114939), (243, 77099), (297, 63081), (387, 48411), (473, 39609), (489, 38313), (891, 21027), (1161, 16137), (1419, 13203), (1467, 12771), (1793, 10449), (2673, 7009), (3483, 5379), (4257, 4401)]