21696705

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20963}}^1$

素因数の和:20997

約数の個数: 24

約数和(自身を含む): 39244608

約数和(自身を除く): 17547903

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 20963, 62889, 104815, 188667, 314445, 482149, 943335, 1446447, 2410745, 4339341, 7232235, 21696705]

約数ペア:

[(1, 21696705), (3, 7232235), (5, 4339341), (9, 2410745), (15, 1446447), (23, 943335), (45, 482149), (69, 314445), (115, 188667), (207, 104815), (345, 62889), (1035, 20963)]