81731013

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{3607}}^1$

素因数の和:3713

約数の個数: 32

約数和(自身を含む): 135776256

約数和(自身を除く): 54045243

約数列:

[1, 3, 7, 13, 21, 39, 83, 91, 249, 273, 581, 1079, 1743, 3237, 3607, 7553, 10821, 22659, 25249, 46891, 75747, 140673, 299381, 328237, 898143, 984711, 2095667, 3891953, 6287001, 11675859, 27243671, 81731013]

約数ペア:

[(1, 81731013), (3, 27243671), (7, 11675859), (13, 6287001), (21, 3891953), (39, 2095667), (83, 984711), (91, 898143), (249, 328237), (273, 299381), (581, 140673), (1079, 75747), (1743, 46891), (3237, 25249), (3607, 22659), (7553, 10821)]