21028352

素因数分解:

$2^9\times {\mathrm{67}}^1\times {\mathrm{613}}^1$

素因数の和:698

約数の個数: 40

約数和(自身を含む): 42712296

約数和(自身を除く): 21683944

約数列:

[1, 2, 4, 8, 16, 32, 64, 67, 128, 134, 256, 268, 512, 536, 613, 1072, 1226, 2144, 2452, 4288, 4904, 8576, 9808, 17152, 19616, 34304, 39232, 41071, 78464, 82142, 156928, 164284, 313856, 328568, 657136, 1314272, 2628544, 5257088, 10514176, 21028352]

約数ペア:

[(1, 21028352), (2, 10514176), (4, 5257088), (8, 2628544), (16, 1314272), (32, 657136), (64, 328568), (67, 313856), (128, 164284), (134, 156928), (256, 82142), (268, 78464), (512, 41071), (536, 39232), (613, 34304), (1072, 19616), (1226, 17152), (2144, 9808), (2452, 8576), (4288, 4904)]