81961334

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{199}}^1$

素因数の和:325

約数の個数: 64

約数和(自身を含む): 159129600

約数和(自身を除く): 77168266

約数列:

[1, 2, 7, 13, 14, 26, 31, 62, 73, 91, 146, 182, 199, 217, 398, 403, 434, 511, 806, 949, 1022, 1393, 1898, 2263, 2587, 2786, 2821, 4526, 5174, 5642, 6169, 6643, 12338, 13286, 14527, 15841, 18109, 29054, 29419, 31682, 36218, 43183, 58838, 80197, 86366, 101689, 160394, 188851, 203378, 205933, 377702, 411866, 450337, 561379, 900674, 1122758, 1321957, 2643914, 3152359, 5854381, 6304718, 11708762, 40980667, 81961334]

約数ペア:

[(1, 81961334), (2, 40980667), (7, 11708762), (13, 6304718), (14, 5854381), (26, 3152359), (31, 2643914), (62, 1321957), (73, 1122758), (91, 900674), (146, 561379), (182, 450337), (199, 411866), (217, 377702), (398, 205933), (403, 203378), (434, 188851), (511, 160394), (806, 101689), (949, 86366), (1022, 80197), (1393, 58838), (1898, 43183), (2263, 36218), (2587, 31682), (2786, 29419), (2821, 29054), (4526, 18109), (5174, 15841), (5642, 14527), (6169, 13286), (6643, 12338)]