21194979

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{373}}^1$

素因数の和:467

約数の個数: 32

約数和(自身を含む): 32169984

約数和(自身を除く): 10975005

約数列:

[1, 3, 13, 31, 39, 47, 93, 141, 373, 403, 611, 1119, 1209, 1457, 1833, 4371, 4849, 11563, 14547, 17531, 18941, 34689, 52593, 56823, 150319, 227903, 450957, 543461, 683709, 1630383, 7064993, 21194979]

約数ペア:

[(1, 21194979), (3, 7064993), (13, 1630383), (31, 683709), (39, 543461), (47, 450957), (93, 227903), (141, 150319), (373, 56823), (403, 52593), (611, 34689), (1119, 18941), (1209, 17531), (1457, 14547), (1833, 11563), (4371, 4849)]