79721901

素因数分解:

$3^4\times 7^1\times {\mathrm{140603}}^1$

素因数の和:140622

約数の個数: 20

約数和(自身を含む): 136104672

約数和(自身を除く): 56382771

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 140603, 421809, 984221, 1265427, 2952663, 3796281, 8857989, 11388843, 26573967, 79721901]

約数ペア:

[(1, 79721901), (3, 26573967), (7, 11388843), (9, 8857989), (21, 3796281), (27, 2952663), (63, 1265427), (81, 984221), (189, 421809), (567, 140603)]