20237776

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{653}}^1$

素因数の和:823

約数の個数: 40

約数和(自身を含む): 42575400

約数和(自身を除く): 22337624

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 149, 208, 298, 596, 653, 1192, 1306, 1937, 2384, 2612, 3874, 5224, 7748, 8489, 10448, 15496, 16978, 30992, 33956, 67912, 97297, 135824, 194594, 389188, 778376, 1264861, 1556752, 2529722, 5059444, 10118888, 20237776]

約数ペア:

[(1, 20237776), (2, 10118888), (4, 5059444), (8, 2529722), (13, 1556752), (16, 1264861), (26, 778376), (52, 389188), (104, 194594), (149, 135824), (208, 97297), (298, 67912), (596, 33956), (653, 30992), (1192, 16978), (1306, 15496), (1937, 10448), (2384, 8489), (2612, 7748), (3874, 5224)]