18315759

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{241}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 31781376

約数和(自身を除く): 13465617

約数列:

[1, 3, 7, 11, 21, 33, 47, 49, 77, 141, 147, 231, 241, 329, 517, 539, 723, 987, 1551, 1617, 1687, 2303, 2651, 3619, 5061, 6909, 7953, 10857, 11327, 11809, 18557, 25333, 33981, 35427, 55671, 75999, 79289, 124597, 129899, 237867, 373791, 389697, 555023, 872179, 1665069, 2616537, 6105253, 18315759]

約数ペア:

[(1, 18315759), (3, 6105253), (7, 2616537), (11, 1665069), (21, 872179), (33, 555023), (47, 389697), (49, 373791), (77, 237867), (141, 129899), (147, 124597), (231, 79289), (241, 75999), (329, 55671), (517, 35427), (539, 33981), (723, 25333), (987, 18557), (1551, 11809), (1617, 11327), (1687, 10857), (2303, 7953), (2651, 6909), (3619, 5061)]