18707031

素因数分解:

$3^4\times 7^1\times {\mathrm{32993}}^1$

素因数の和:33012

約数の個数: 20

約数和(自身を含む): 31938192

約数和(自身を除く): 13231161

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 32993, 98979, 230951, 296937, 692853, 890811, 2078559, 2672433, 6235677, 18707031]

約数ペア:

[(1, 18707031), (3, 6235677), (7, 2672433), (9, 2078559), (21, 890811), (27, 692853), (63, 296937), (81, 230951), (189, 98979), (567, 32993)]