21088461

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{4157}}^1$

素因数の和:4268

約数の個数: 16

約数和(自身を含む): 29937600

約数和(自身を除く): 8849139

約数列:

[1, 3, 19, 57, 89, 267, 1691, 4157, 5073, 12471, 78983, 236949, 369973, 1109919, 7029487, 21088461]

約数ペア:

[(1, 21088461), (3, 7029487), (19, 1109919), (57, 369973), (89, 236949), (267, 78983), (1691, 12471), (4157, 5073)]