21088395

素因数分解:

$3^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{2221}}^1$

素因数の和:2443

約数の個数: 24

約数和(自身を含む): 36742992

約数和(自身を除く): 15654597

約数列:

[1, 3, 5, 9, 15, 45, 211, 633, 1055, 1899, 2221, 3165, 6663, 9495, 11105, 19989, 33315, 99945, 468631, 1405893, 2343155, 4217679, 7029465, 21088395]

約数ペア:

[(1, 21088395), (3, 7029465), (5, 4217679), (9, 2343155), (15, 1405893), (45, 468631), (211, 99945), (633, 33315), (1055, 19989), (1899, 11105), (2221, 9495), (3165, 6663)]