19973649

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{1187}}^1$

素因数の和:1340

約数の個数: 16

約数和(自身を含む): 27371520

約数和(自身を除く): 7397871

約数列:

[1, 3, 71, 79, 213, 237, 1187, 3561, 5609, 16827, 84277, 93773, 252831, 281319, 6657883, 19973649]

約数ペア:

[(1, 19973649), (3, 6657883), (71, 281319), (79, 252831), (213, 93773), (237, 84277), (1187, 16827), (3561, 5609)]