21515217

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{5779}}^1$

素因数の和:5872

約数の個数: 16

約数和(自身を含む): 30795840

約数和(自身を除く): 9280623

約数列:

[1, 3, 17, 51, 73, 219, 1241, 3723, 5779, 17337, 98243, 294729, 421867, 1265601, 7171739, 21515217]

約数ペア:

[(1, 21515217), (3, 7171739), (17, 1265601), (51, 421867), (73, 294729), (219, 98243), (1241, 17337), (3723, 5779)]