19801593

素因数分解:

$3^2\times 7^1\times {\mathrm{257}}^1\times {\mathrm{1223}}^1$

素因数の和:1493

約数の個数: 24

約数和(自身を含む): 32842368

約数和(自身を除く): 13040775

約数列:

[1, 3, 7, 9, 21, 63, 257, 771, 1223, 1799, 2313, 3669, 5397, 8561, 11007, 16191, 25683, 77049, 314311, 942933, 2200177, 2828799, 6600531, 19801593]

約数ペア:

[(1, 19801593), (3, 6600531), (7, 2828799), (9, 2200177), (21, 942933), (63, 314311), (257, 77049), (771, 25683), (1223, 16191), (1799, 11007), (2313, 8561), (3669, 5397)]