21178044

素因数分解:

$2^2\times 3^3\times {\mathrm{157}}^1\times {\mathrm{1249}}^1$

素因数の和:1419

約数の個数: 48

約数和(自身を含む): 55300000

約数和(自身を除く): 34121956

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 157, 314, 471, 628, 942, 1249, 1413, 1884, 2498, 2826, 3747, 4239, 4996, 5652, 7494, 8478, 11241, 14988, 16956, 22482, 33723, 44964, 67446, 134892, 196093, 392186, 588279, 784372, 1176558, 1764837, 2353116, 3529674, 5294511, 7059348, 10589022, 21178044]

約数ペア:

[(1, 21178044), (2, 10589022), (3, 7059348), (4, 5294511), (6, 3529674), (9, 2353116), (12, 1764837), (18, 1176558), (27, 784372), (36, 588279), (54, 392186), (108, 196093), (157, 134892), (314, 67446), (471, 44964), (628, 33723), (942, 22482), (1249, 16956), (1413, 14988), (1884, 11241), (2498, 8478), (2826, 7494), (3747, 5652), (4239, 4996)]