20864128

素因数分解:

$2^7\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{373}}^1$

素因数の和:429

約数の個数: 64

約数和(自身を含む): 45777600

約数和(自身を除く): 24913472

約数列:

[1, 2, 4, 8, 16, 19, 23, 32, 38, 46, 64, 76, 92, 128, 152, 184, 304, 368, 373, 437, 608, 736, 746, 874, 1216, 1472, 1492, 1748, 2432, 2944, 2984, 3496, 5968, 6992, 7087, 8579, 11936, 13984, 14174, 17158, 23872, 27968, 28348, 34316, 47744, 55936, 56696, 68632, 113392, 137264, 163001, 226784, 274528, 326002, 453568, 549056, 652004, 907136, 1098112, 1304008, 2608016, 5216032, 10432064, 20864128]

約数ペア:

[(1, 20864128), (2, 10432064), (4, 5216032), (8, 2608016), (16, 1304008), (19, 1098112), (23, 907136), (32, 652004), (38, 549056), (46, 453568), (64, 326002), (76, 274528), (92, 226784), (128, 163001), (152, 137264), (184, 113392), (304, 68632), (368, 56696), (373, 55936), (437, 47744), (608, 34316), (736, 28348), (746, 27968), (874, 23872), (1216, 17158), (1472, 14174), (1492, 13984), (1748, 11936), (2432, 8579), (2944, 7087), (2984, 6992), (3496, 5968)]