28100331

素因数分解:

$3^3\times 7^1\times {\mathrm{157}}^1\times {\mathrm{947}}^1$

素因数の和:1120

約数の個数: 32

約数和(自身を含む): 47930880

約数和(自身を除く): 19830549

約数列:

[1, 3, 7, 9, 21, 27, 63, 157, 189, 471, 947, 1099, 1413, 2841, 3297, 4239, 6629, 8523, 9891, 19887, 25569, 29673, 59661, 148679, 178983, 446037, 1040753, 1338111, 3122259, 4014333, 9366777, 28100331]

約数ペア:

[(1, 28100331), (3, 9366777), (7, 4014333), (9, 3122259), (21, 1338111), (27, 1040753), (63, 446037), (157, 178983), (189, 148679), (471, 59661), (947, 29673), (1099, 25569), (1413, 19887), (2841, 9891), (3297, 8523), (4239, 6629)]