18811683

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{491}}^1$

素因数の和:557

約数の個数: 40

約数和(自身を含む): 31432896

約数和(自身を除く): 12621213

約数列:

[1, 3, 9, 11, 27, 33, 43, 81, 99, 129, 297, 387, 473, 491, 891, 1161, 1419, 1473, 3483, 4257, 4419, 5401, 12771, 13257, 16203, 21113, 38313, 39771, 48609, 63339, 145827, 190017, 232243, 437481, 570051, 696729, 1710153, 2090187, 6270561, 18811683]

約数ペア:

[(1, 18811683), (3, 6270561), (9, 2090187), (11, 1710153), (27, 696729), (33, 570051), (43, 437481), (81, 232243), (99, 190017), (129, 145827), (297, 63339), (387, 48609), (473, 39771), (491, 38313), (891, 21113), (1161, 16203), (1419, 13257), (1473, 12771), (3483, 5401), (4257, 4419)]