18774789

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1$

素因数の和:289

約数の個数: 32

約数和(自身を含む): 28435968

約数和(自身を除く): 9661179

約数列:

[1, 3, 11, 33, 43, 101, 129, 131, 303, 393, 473, 1111, 1419, 1441, 3333, 4323, 4343, 5633, 13029, 13231, 16899, 39693, 47773, 61963, 143319, 145541, 185889, 436623, 568933, 1706799, 6258263, 18774789]

約数ペア:

[(1, 18774789), (3, 6258263), (11, 1706799), (33, 568933), (43, 436623), (101, 185889), (129, 145541), (131, 143319), (303, 61963), (393, 47773), (473, 39693), (1111, 16899), (1419, 13231), (1441, 13029), (3333, 5633), (4323, 4343)]