21981916

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{2791}}^1$

素因数の和:2985

約数の個数: 24

約数和(自身を含む): 42215040

約数和(自身を除く): 20233124

約数列:

[1, 2, 4, 11, 22, 44, 179, 358, 716, 1969, 2791, 3938, 5582, 7876, 11164, 30701, 61402, 122804, 499589, 999178, 1998356, 5495479, 10990958, 21981916]

約数ペア:

[(1, 21981916), (2, 10990958), (4, 5495479), (11, 1998356), (22, 999178), (44, 499589), (179, 122804), (358, 61402), (716, 30701), (1969, 11164), (2791, 7876), (3938, 5582)]