18418239

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{223}}^1$

素因数の和:281

約数の個数: 64

約数和(自身を含む): 34406400

約数和(自身を除く): 15988161

約数列:

[1, 3, 7, 9, 19, 21, 23, 27, 57, 63, 69, 133, 161, 171, 189, 207, 223, 399, 437, 483, 513, 621, 669, 1197, 1311, 1449, 1561, 2007, 3059, 3591, 3933, 4237, 4347, 4683, 5129, 6021, 9177, 11799, 12711, 14049, 15387, 27531, 29659, 35903, 38133, 42147, 46161, 82593, 88977, 97451, 107709, 114399, 138483, 266931, 292353, 323127, 682157, 800793, 877059, 969381, 2046471, 2631177, 6139413, 18418239]

約数ペア:

[(1, 18418239), (3, 6139413), (7, 2631177), (9, 2046471), (19, 969381), (21, 877059), (23, 800793), (27, 682157), (57, 323127), (63, 292353), (69, 266931), (133, 138483), (161, 114399), (171, 107709), (189, 97451), (207, 88977), (223, 82593), (399, 46161), (437, 42147), (483, 38133), (513, 35903), (621, 29659), (669, 27531), (1197, 15387), (1311, 14049), (1449, 12711), (1561, 11799), (2007, 9177), (3059, 6021), (3591, 5129), (3933, 4683), (4237, 4347)]