71720319

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1\times {\mathrm{389}}^1$

素因数の和:591

約数の個数: 32

約数和(自身を含む): 108126720

約数和(自身を除く): 36406401

約数列:

[1, 3, 11, 33, 37, 111, 151, 389, 407, 453, 1167, 1221, 1661, 4279, 4983, 5587, 12837, 14393, 16761, 43179, 58739, 61457, 158323, 176217, 184371, 474969, 646129, 1938387, 2173343, 6520029, 23906773, 71720319]

約数ペア:

[(1, 71720319), (3, 23906773), (11, 6520029), (33, 2173343), (37, 1938387), (111, 646129), (151, 474969), (389, 184371), (407, 176217), (453, 158323), (1167, 61457), (1221, 58739), (1661, 43179), (4279, 16761), (4983, 14393), (5587, 12837)]