16228989

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 28164864

約数和(自身を除く): 11935875

約数列:

[1, 3, 7, 9, 21, 41, 61, 63, 103, 123, 183, 287, 309, 369, 427, 549, 721, 861, 927, 1281, 2163, 2501, 2583, 3843, 4223, 6283, 6489, 7503, 12669, 17507, 18849, 22509, 29561, 38007, 43981, 52521, 56547, 88683, 131943, 157563, 257603, 266049, 395829, 772809, 1803221, 2318427, 5409663, 16228989]

約数ペア:

[(1, 16228989), (3, 5409663), (7, 2318427), (9, 1803221), (21, 772809), (41, 395829), (61, 266049), (63, 257603), (103, 157563), (123, 131943), (183, 88683), (287, 56547), (309, 52521), (369, 43981), (427, 38007), (549, 29561), (721, 22509), (861, 18849), (927, 17507), (1281, 12669), (2163, 7503), (2501, 6489), (2583, 6283), (3843, 4223)]