81493555

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{293}}^1\times {\mathrm{389}}^1$

素因数の和:711

約数の個数: 32

約数和(自身を含む): 115577280

約数和(自身を除く): 34083725

約数列:

[1, 5, 11, 13, 55, 65, 143, 293, 389, 715, 1465, 1945, 3223, 3809, 4279, 5057, 16115, 19045, 21395, 25285, 41899, 55627, 113977, 209495, 278135, 569885, 1253747, 1481701, 6268735, 7408505, 16298711, 81493555]

約数ペア:

[(1, 81493555), (5, 16298711), (11, 7408505), (13, 6268735), (55, 1481701), (65, 1253747), (143, 569885), (293, 278135), (389, 209495), (715, 113977), (1465, 55627), (1945, 41899), (3223, 25285), (3809, 21395), (4279, 19045), (5057, 16115)]