20327584

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{389}}^1$

素因数の和:493

約数の個数: 48

約数和(自身を含む): 42456960

約数和(自身を除く): 22129376

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 71, 92, 142, 184, 284, 368, 389, 568, 736, 778, 1136, 1556, 1633, 2272, 3112, 3266, 6224, 6532, 8947, 12448, 13064, 17894, 26128, 27619, 35788, 52256, 55238, 71576, 110476, 143152, 220952, 286304, 441904, 635237, 883808, 1270474, 2540948, 5081896, 10163792, 20327584]

約数ペア:

[(1, 20327584), (2, 10163792), (4, 5081896), (8, 2540948), (16, 1270474), (23, 883808), (32, 635237), (46, 441904), (71, 286304), (92, 220952), (142, 143152), (184, 110476), (284, 71576), (368, 55238), (389, 52256), (568, 35788), (736, 27619), (778, 26128), (1136, 17894), (1556, 13064), (1633, 12448), (2272, 8947), (3112, 6532), (3266, 6224)]