19982457

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{547}}^1$

素因数の和:611

約数の個数: 40

約数和(自身を含む): 33419232

約数和(自身を除く): 13436775

約数列:

[1, 3, 9, 11, 27, 33, 41, 81, 99, 123, 297, 369, 451, 547, 891, 1107, 1353, 1641, 3321, 4059, 4923, 6017, 12177, 14769, 18051, 22427, 36531, 44307, 54153, 67281, 162459, 201843, 246697, 487377, 605529, 740091, 1816587, 2220273, 6660819, 19982457]

約数ペア:

[(1, 19982457), (3, 6660819), (9, 2220273), (11, 1816587), (27, 740091), (33, 605529), (41, 487377), (81, 246697), (99, 201843), (123, 162459), (297, 67281), (369, 54153), (451, 44307), (547, 36531), (891, 22427), (1107, 18051), (1353, 14769), (1641, 12177), (3321, 6017), (4059, 4923)]