217646919

素因数分解:

$3^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{227}}^1$

素因数の和:354

約数の個数: 80

約数和(自身を含む): 397267200

約数和(自身を除く): 179620281

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 89, 133, 171, 189, 227, 267, 399, 513, 567, 623, 681, 801, 1197, 1539, 1589, 1691, 1869, 2043, 2403, 3591, 4313, 4767, 5073, 5607, 6129, 7209, 10773, 11837, 12939, 14301, 15219, 16821, 18387, 20203, 30191, 35511, 38817, 42903, 45657, 50463, 60609, 90573, 106533, 116451, 128709, 136971, 141421, 181827, 271719, 319599, 349353, 383857, 424263, 545481, 815157, 958797, 1151571, 1272789, 1636443, 2445471, 2686999, 3454713, 3818367, 8060997, 10364139, 11455101, 24182991, 31092417, 72548973, 217646919]

約数ペア:

[(1, 217646919), (3, 72548973), (7, 31092417), (9, 24182991), (19, 11455101), (21, 10364139), (27, 8060997), (57, 3818367), (63, 3454713), (81, 2686999), (89, 2445471), (133, 1636443), (171, 1272789), (189, 1151571), (227, 958797), (267, 815157), (399, 545481), (513, 424263), (567, 383857), (623, 349353), (681, 319599), (801, 271719), (1197, 181827), (1539, 141421), (1589, 136971), (1691, 128709), (1869, 116451), (2043, 106533), (2403, 90573), (3591, 60609), (4313, 50463), (4767, 45657), (5073, 42903), (5607, 38817), (6129, 35511), (7209, 30191), (10773, 20203), (11837, 18387), (12939, 16821), (14301, 15219)]