20553993

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{5399}}^1$

素因数の和:5458

約数の個数: 20

約数和(自身を含む): 31363200

約数和(自身を除く): 10809207

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 5399, 16197, 48591, 145773, 253753, 437319, 761259, 2283777, 6851331, 20553993]

約数ペア:

[(1, 20553993), (3, 6851331), (9, 2283777), (27, 761259), (47, 437319), (81, 253753), (141, 145773), (423, 48591), (1269, 16197), (3807, 5399)]