21297285

素因数分解:

$3^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{2243}}^1$

素因数の和:2465

約数の個数: 24

約数和(自身を含む): 37106784

約数和(自身を除く): 15809499

約数列:

[1, 3, 5, 9, 15, 45, 211, 633, 1055, 1899, 2243, 3165, 6729, 9495, 11215, 20187, 33645, 100935, 473273, 1419819, 2366365, 4259457, 7099095, 21297285]

約数ペア:

[(1, 21297285), (3, 7099095), (5, 4259457), (9, 2366365), (15, 1419819), (45, 473273), (211, 100935), (633, 33645), (1055, 20187), (1899, 11215), (2243, 9495), (3165, 6729)]