18260781

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{491}}^1$

素因数の和:542

約数の個数: 48

約数和(自身を含む): 32306688

約数和(自身を除く): 14045907

約数列:

[1, 3, 7, 11, 21, 23, 33, 49, 69, 77, 147, 161, 231, 253, 483, 491, 539, 759, 1127, 1473, 1617, 1771, 3381, 3437, 5313, 5401, 10311, 11293, 12397, 16203, 24059, 33879, 37191, 37807, 72177, 79051, 113421, 124223, 237153, 264649, 372669, 553357, 793947, 869561, 1660071, 2608683, 6086927, 18260781]

約数ペア:

[(1, 18260781), (3, 6086927), (7, 2608683), (11, 1660071), (21, 869561), (23, 793947), (33, 553357), (49, 372669), (69, 264649), (77, 237153), (147, 124223), (161, 113421), (231, 79051), (253, 72177), (483, 37807), (491, 37191), (539, 33879), (759, 24059), (1127, 16203), (1473, 12397), (1617, 11293), (1771, 10311), (3381, 5401), (3437, 5313)]