21578347

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{1327}}^1$

素因数の和:1458

約数の個数: 16

約数和(自身を含む): 26007552

約数和(自身を除く): 4429205

約数列:

[1, 7, 23, 101, 161, 707, 1327, 2323, 9289, 16261, 30521, 134027, 213647, 938189, 3082621, 21578347]

約数ペア:

[(1, 21578347), (7, 3082621), (23, 938189), (101, 213647), (161, 134027), (707, 30521), (1327, 16261), (2323, 9289)]