19421857

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{239}}^1$

素因数の和:325

約数の個数: 32

約数和(自身を含む): 25804800

約数和(自身を除く): 6382943

約数列:

[1, 7, 13, 19, 47, 91, 133, 239, 247, 329, 611, 893, 1673, 1729, 3107, 4277, 4541, 6251, 11233, 11609, 21749, 31787, 59033, 78631, 81263, 146029, 213427, 413231, 1022203, 1493989, 2774551, 19421857]

約数ペア:

[(1, 19421857), (7, 2774551), (13, 1493989), (19, 1022203), (47, 413231), (91, 213427), (133, 146029), (239, 81263), (247, 78631), (329, 59033), (611, 31787), (893, 21749), (1673, 11609), (1729, 11233), (3107, 6251), (4277, 4541)]