21214963

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{853}}^1$

素因数の和:907

約数の個数: 32

約数和(自身を含む): 29514240

約数和(自身を除く): 8299277

約数列:

[1, 7, 11, 17, 19, 77, 119, 133, 187, 209, 323, 853, 1309, 1463, 2261, 3553, 5971, 9383, 14501, 16207, 24871, 65681, 101507, 113449, 159511, 178277, 275519, 1116577, 1247939, 1928633, 3030709, 21214963]

約数ペア:

[(1, 21214963), (7, 3030709), (11, 1928633), (17, 1247939), (19, 1116577), (77, 275519), (119, 178277), (133, 159511), (187, 113449), (209, 101507), (323, 65681), (853, 24871), (1309, 16207), (1463, 14501), (2261, 9383), (3553, 5971)]