21709221

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{3767}}^1$

素因数の和:3900

約数の個数: 16

約数和(自身を含む): 30927744

約数和(自身を除く): 9218523

約数列:

[1, 3, 17, 51, 113, 339, 1921, 3767, 5763, 11301, 64039, 192117, 425671, 1277013, 7236407, 21709221]

約数ペア:

[(1, 21709221), (3, 7236407), (17, 1277013), (51, 425671), (113, 192117), (339, 64039), (1921, 11301), (3767, 5763)]