20472993

素因数分解:

$3^5\times {\mathrm{173}}^1\times {\mathrm{487}}^1$

素因数の和:675

約数の個数: 24

約数和(自身を含む): 30907968

約数和(自身を除く): 10434975

約数列:

[1, 3, 9, 27, 81, 173, 243, 487, 519, 1461, 1557, 4383, 4671, 13149, 14013, 39447, 42039, 84251, 118341, 252753, 758259, 2274777, 6824331, 20472993]

約数ペア:

[(1, 20472993), (3, 6824331), (9, 2274777), (27, 758259), (81, 252753), (173, 118341), (243, 84251), (487, 42039), (519, 39447), (1461, 14013), (1557, 13149), (4383, 4671)]