19719369

素因数分解:

$3^4\times {\mathrm{137}}^1\times {\mathrm{1777}}^1$

素因数の和:1926

約数の個数: 20

約数和(自身を含む): 29689044

約数和(自身を除く): 9969675

約数列:

[1, 3, 9, 27, 81, 137, 411, 1233, 1777, 3699, 5331, 11097, 15993, 47979, 143937, 243449, 730347, 2191041, 6573123, 19719369]

約数ペア:

[(1, 19719369), (3, 6573123), (9, 2191041), (27, 730347), (81, 243449), (137, 143937), (411, 47979), (1233, 15993), (1777, 11097), (3699, 5331)]