21369952

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{241}}^1$

素因数の和:431

約数の個数: 48

約数和(自身を含む): 45006192

約数和(自身を除く): 23636240

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 136, 163, 241, 272, 326, 482, 544, 652, 964, 1304, 1928, 2608, 2771, 3856, 4097, 5216, 5542, 7712, 8194, 11084, 16388, 22168, 32776, 39283, 44336, 65552, 78566, 88672, 131104, 157132, 314264, 628528, 667811, 1257056, 1335622, 2671244, 5342488, 10684976, 21369952]

約数ペア:

[(1, 21369952), (2, 10684976), (4, 5342488), (8, 2671244), (16, 1335622), (17, 1257056), (32, 667811), (34, 628528), (68, 314264), (136, 157132), (163, 131104), (241, 88672), (272, 78566), (326, 65552), (482, 44336), (544, 39283), (652, 32776), (964, 22168), (1304, 16388), (1928, 11084), (2608, 8194), (2771, 7712), (3856, 5542), (4097, 5216)]