256706128

素因数分解:

$2^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{227}}^1\times {\mathrm{439}}^1$

素因数の和:704

約数の個数: 80

約数和(自身を含む): 597104640

約数和(自身を除く): 340398512

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 46, 56, 92, 112, 161, 184, 227, 322, 368, 439, 454, 644, 878, 908, 1288, 1589, 1756, 1816, 2576, 3073, 3178, 3512, 3632, 5221, 6146, 6356, 7024, 10097, 10442, 12292, 12712, 20194, 20884, 24584, 25424, 36547, 40388, 41768, 49168, 70679, 73094, 80776, 83536, 99653, 141358, 146188, 161552, 199306, 282716, 292376, 398612, 565432, 584752, 697571, 797224, 1130864, 1395142, 1594448, 2292019, 2790284, 4584038, 5580568, 9168076, 11161136, 16044133, 18336152, 32088266, 36672304, 64176532, 128353064, 256706128]

約数ペア:

[(1, 256706128), (2, 128353064), (4, 64176532), (7, 36672304), (8, 32088266), (14, 18336152), (16, 16044133), (23, 11161136), (28, 9168076), (46, 5580568), (56, 4584038), (92, 2790284), (112, 2292019), (161, 1594448), (184, 1395142), (227, 1130864), (322, 797224), (368, 697571), (439, 584752), (454, 565432), (644, 398612), (878, 292376), (908, 282716), (1288, 199306), (1589, 161552), (1756, 146188), (1816, 141358), (2576, 99653), (3073, 83536), (3178, 80776), (3512, 73094), (3632, 70679), (5221, 49168), (6146, 41768), (6356, 40388), (7024, 36547), (10097, 25424), (10442, 24584), (12292, 20884), (12712, 20194)]