19725993

素因数分解:

$3^2\times 7^1\times {\mathrm{353}}^1\times {\mathrm{887}}^1$

素因数の和:1253

約数の個数: 24

約数和(自身を含む): 32692608

約数和(自身を除く): 12966615

約数列:

[1, 3, 7, 9, 21, 63, 353, 887, 1059, 2471, 2661, 3177, 6209, 7413, 7983, 18627, 22239, 55881, 313111, 939333, 2191777, 2817999, 6575331, 19725993]

約数ペア:

[(1, 19725993), (3, 6575331), (7, 2817999), (9, 2191777), (21, 939333), (63, 313111), (353, 55881), (887, 22239), (1059, 18627), (2471, 7983), (2661, 7413), (3177, 6209)]