21209349

素因数分解:

$3^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{5233}}^1$

素因数の和:5436

約数の個数: 16

約数和(自身を含む): 32492672

約数和(自身を除く): 11283323

約数列:

[1, 3, 7, 21, 193, 579, 1351, 4053, 5233, 15699, 36631, 109893, 1009969, 3029907, 7069783, 21209349]

約数ペア:

[(1, 21209349), (3, 7069783), (7, 3029907), (21, 1009969), (193, 109893), (579, 36631), (1351, 15699), (4053, 5233)]