16519221

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{8867}}^1$

素因数の和:8902

約数の個数: 20

約数和(自身を含む): 25752672

約数和(自身を除く): 9233451

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 8867, 26601, 79803, 203941, 239409, 611823, 718227, 1835469, 5506407, 16519221]

約数ペア:

[(1, 16519221), (3, 5506407), (9, 1835469), (23, 718227), (27, 611823), (69, 239409), (81, 203941), (207, 79803), (621, 26601), (1863, 8867)]