21164645

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1\times {\mathrm{239}}^1$

素因数の和:532

約数の個数: 16

約数和(自身を含む): 25920000

約数和(自身を除く): 4755355

約数列:

[1, 5, 89, 199, 239, 445, 995, 1195, 17711, 21271, 47561, 88555, 106355, 237805, 4232929, 21164645]

約数ペア:

[(1, 21164645), (5, 4232929), (89, 237805), (199, 106355), (239, 88555), (445, 47561), (995, 21271), (1195, 17711)]