28281856

素因数分解:

$2^{10}\times {\mathrm{71}}^1\times {\mathrm{389}}^1$

素因数の和:480

約数の個数: 44

約数和(自身を含む): 57479760

約数和(自身を除く): 29197904

約数列:

[1, 2, 4, 8, 16, 32, 64, 71, 128, 142, 256, 284, 389, 512, 568, 778, 1024, 1136, 1556, 2272, 3112, 4544, 6224, 9088, 12448, 18176, 24896, 27619, 36352, 49792, 55238, 72704, 99584, 110476, 199168, 220952, 398336, 441904, 883808, 1767616, 3535232, 7070464, 14140928, 28281856]

約数ペア:

[(1, 28281856), (2, 14140928), (4, 7070464), (8, 3535232), (16, 1767616), (32, 883808), (64, 441904), (71, 398336), (128, 220952), (142, 199168), (256, 110476), (284, 99584), (389, 72704), (512, 55238), (568, 49792), (778, 36352), (1024, 27619), (1136, 24896), (1556, 18176), (2272, 12448), (3112, 9088), (4544, 6224)]