18803673

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{683}}^1$

素因数の和:738

約数の個数: 48

約数和(自身を含む): 34145280

約数和(自身を除く): 15341607

約数列:

[1, 3, 7, 9, 19, 21, 23, 57, 63, 69, 133, 161, 171, 207, 399, 437, 483, 683, 1197, 1311, 1449, 2049, 3059, 3933, 4781, 6147, 9177, 12977, 14343, 15709, 27531, 38931, 43029, 47127, 90839, 109963, 116793, 141381, 272517, 298471, 329889, 817551, 895413, 989667, 2089297, 2686239, 6267891, 18803673]

約数ペア:

[(1, 18803673), (3, 6267891), (7, 2686239), (9, 2089297), (19, 989667), (21, 895413), (23, 817551), (57, 329889), (63, 298471), (69, 272517), (133, 141381), (161, 116793), (171, 109963), (207, 90839), (399, 47127), (437, 43029), (483, 38931), (683, 27531), (1197, 15709), (1311, 14343), (1449, 12977), (2049, 9177), (3059, 6147), (3933, 4781)]