19879839

素因数分解:

$3^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{739}}^1$

素因数の和:820

約数の個数: 36

約数和(自身を含む): 33997080

約数和(自身を除く): 14117241

約数列:

[1, 3, 7, 9, 21, 49, 61, 63, 147, 183, 427, 441, 549, 739, 1281, 2217, 2989, 3843, 5173, 6651, 8967, 15519, 26901, 36211, 45079, 46557, 108633, 135237, 315553, 325899, 405711, 946659, 2208871, 2839977, 6626613, 19879839]

約数ペア:

[(1, 19879839), (3, 6626613), (7, 2839977), (9, 2208871), (21, 946659), (49, 405711), (61, 325899), (63, 315553), (147, 135237), (183, 108633), (427, 46557), (441, 45079), (549, 36211), (739, 26901), (1281, 15519), (2217, 8967), (2989, 6651), (3843, 5173)]