21206361

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{367}}^1$

素因数の和:501

約数の個数: 32

約数和(自身を含む): 33067008

約数和(自身を除く): 11860647

約数列:

[1, 3, 11, 17, 33, 51, 103, 187, 309, 367, 561, 1101, 1133, 1751, 3399, 4037, 5253, 6239, 12111, 18717, 19261, 37801, 57783, 68629, 113403, 205887, 415811, 642617, 1247433, 1927851, 7068787, 21206361]

約数ペア:

[(1, 21206361), (3, 7068787), (11, 1927851), (17, 1247433), (33, 642617), (51, 415811), (103, 205887), (187, 113403), (309, 68629), (367, 57783), (561, 37801), (1101, 19261), (1133, 18717), (1751, 12111), (3399, 6239), (4037, 5253)]