21531328

素因数分解:

$2^6\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3697}}^1$

素因数の和:3729

約数の個数: 56

約数和(自身を含む): 52600352

約数和(自身を除く): 31069024

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 64, 91, 104, 112, 182, 208, 224, 364, 416, 448, 728, 832, 1456, 2912, 3697, 5824, 7394, 14788, 25879, 29576, 48061, 51758, 59152, 96122, 103516, 118304, 192244, 207032, 236608, 336427, 384488, 414064, 672854, 768976, 828128, 1345708, 1537952, 1656256, 2691416, 3075904, 5382832, 10765664, 21531328]

約数ペア:

[(1, 21531328), (2, 10765664), (4, 5382832), (7, 3075904), (8, 2691416), (13, 1656256), (14, 1537952), (16, 1345708), (26, 828128), (28, 768976), (32, 672854), (52, 414064), (56, 384488), (64, 336427), (91, 236608), (104, 207032), (112, 192244), (182, 118304), (208, 103516), (224, 96122), (364, 59152), (416, 51758), (448, 48061), (728, 29576), (832, 25879), (1456, 14788), (2912, 7394), (3697, 5824)]