781287

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{67}}^1$

素因数の和:119

約数の個数: 24

約数和(自身を含む): 1194624

約数和(自身を除く): 413337

約数列:

[1, 3, 13, 23, 39, 67, 69, 169, 201, 299, 507, 871, 897, 1541, 2613, 3887, 4623, 11323, 11661, 20033, 33969, 60099, 260429, 781287]

約数ペア:

[(1, 781287), (3, 260429), (13, 60099), (23, 33969), (39, 20033), (67, 11661), (69, 11323), (169, 4623), (201, 3887), (299, 2613), (507, 1541), (871, 897)]