18108981

素因数分解:

$3^3\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{241}}^1$

素因数の和:295

約数の個数: 48

約数和(自身を含む): 30898560

約数和(自身を除く): 12789579

約数列:

[1, 3, 9, 11, 23, 27, 33, 69, 99, 121, 207, 241, 253, 297, 363, 621, 723, 759, 1089, 2169, 2277, 2651, 2783, 3267, 5543, 6507, 6831, 7953, 8349, 16629, 23859, 25047, 29161, 49887, 60973, 71577, 75141, 87483, 149661, 182919, 262449, 548757, 670703, 787347, 1646271, 2012109, 6036327, 18108981]

約数ペア:

[(1, 18108981), (3, 6036327), (9, 2012109), (11, 1646271), (23, 787347), (27, 670703), (33, 548757), (69, 262449), (99, 182919), (121, 149661), (207, 87483), (241, 75141), (253, 71577), (297, 60973), (363, 49887), (621, 29161), (723, 25047), (759, 23859), (1089, 16629), (2169, 8349), (2277, 7953), (2651, 6831), (2783, 6507), (3267, 5543)]