20347803

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{191}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 35942400

約数和(自身を除く): 15594597

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 89, 133, 171, 191, 267, 399, 573, 623, 801, 1197, 1337, 1691, 1719, 1869, 3629, 4011, 5073, 5607, 10887, 11837, 12033, 15219, 16999, 25403, 32661, 35511, 50997, 76209, 106533, 118993, 152991, 228627, 322981, 356979, 968943, 1070937, 2260867, 2906829, 6782601, 20347803]

約数ペア:

[(1, 20347803), (3, 6782601), (7, 2906829), (9, 2260867), (19, 1070937), (21, 968943), (57, 356979), (63, 322981), (89, 228627), (133, 152991), (171, 118993), (191, 106533), (267, 76209), (399, 50997), (573, 35511), (623, 32661), (801, 25403), (1197, 16999), (1337, 15219), (1691, 12033), (1719, 11837), (1869, 10887), (3629, 5607), (4011, 5073)]