28734237

素因数分解:

$3^3\times 7^2\times {\mathrm{37}}^1\times {\mathrm{587}}^1$

素因数の和:647

約数の個数: 48

約数和(自身を含む): 50944320

約数和(自身を除く): 22210083

約数列:

[1, 3, 7, 9, 21, 27, 37, 49, 63, 111, 147, 189, 259, 333, 441, 587, 777, 999, 1323, 1761, 1813, 2331, 4109, 5283, 5439, 6993, 12327, 15849, 16317, 21719, 28763, 36981, 48951, 65157, 86289, 110943, 152033, 195471, 258867, 456099, 586413, 776601, 1064231, 1368297, 3192693, 4104891, 9578079, 28734237]

約数ペア:

[(1, 28734237), (3, 9578079), (7, 4104891), (9, 3192693), (21, 1368297), (27, 1064231), (37, 776601), (49, 586413), (63, 456099), (111, 258867), (147, 195471), (189, 152033), (259, 110943), (333, 86289), (441, 65157), (587, 48951), (777, 36981), (999, 28763), (1323, 21719), (1761, 16317), (1813, 15849), (2331, 12327), (4109, 6993), (5283, 5439)]