81790709

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{809}}^1$

素因数の和:941

約数の個数: 32

約数和(自身を含む): 111041280

約数和(自身を除く): 29250571

約数列:

[1, 7, 11, 13, 77, 91, 101, 143, 707, 809, 1001, 1111, 1313, 5663, 7777, 8899, 9191, 10517, 14443, 62293, 73619, 81709, 101101, 115687, 571963, 809809, 898799, 1062217, 6291593, 7435519, 11684387, 81790709]

約数ペア:

[(1, 81790709), (7, 11684387), (11, 7435519), (13, 6291593), (77, 1062217), (91, 898799), (101, 809809), (143, 571963), (707, 115687), (809, 101101), (1001, 81709), (1111, 73619), (1313, 62293), (5663, 14443), (7777, 10517), (8899, 9191)]