19887309

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{56659}}^1$

素因数の和:56681

約数の個数: 16

約数和(自身を含む): 31729600

約数和(自身を除く): 11842291

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 56659, 169977, 509931, 736567, 1529793, 2209701, 6629103, 19887309]

約数ペア:

[(1, 19887309), (3, 6629103), (9, 2209701), (13, 1529793), (27, 736567), (39, 509931), (117, 169977), (351, 56659)]