21993279

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{5011}}^1$

素因数の和:5051

約数の個数: 32

約数和(自身を含む): 38492160

約数和(自身を除く): 16498881

約数列:

[1, 3, 7, 11, 19, 21, 33, 57, 77, 133, 209, 231, 399, 627, 1463, 4389, 5011, 15033, 35077, 55121, 95209, 105231, 165363, 285627, 385847, 666463, 1047299, 1157541, 1999389, 3141897, 7331093, 21993279]

約数ペア:

[(1, 21993279), (3, 7331093), (7, 3141897), (11, 1999389), (19, 1157541), (21, 1047299), (33, 666463), (57, 385847), (77, 285627), (133, 165363), (209, 105231), (231, 95209), (399, 55121), (627, 35077), (1463, 15033), (4389, 5011)]