19715680

素因数分解:

$2^5\times 5^1\times {\mathrm{149}}^1\times {\mathrm{827}}^1$

素因数の和:991

約数の個数: 48

約数和(自身を含む): 46947600

約数和(自身を除く): 27231920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 149, 160, 298, 596, 745, 827, 1192, 1490, 1654, 2384, 2980, 3308, 4135, 4768, 5960, 6616, 8270, 11920, 13232, 16540, 23840, 26464, 33080, 66160, 123223, 132320, 246446, 492892, 616115, 985784, 1232230, 1971568, 2464460, 3943136, 4928920, 9857840, 19715680]

約数ペア:

[(1, 19715680), (2, 9857840), (4, 4928920), (5, 3943136), (8, 2464460), (10, 1971568), (16, 1232230), (20, 985784), (32, 616115), (40, 492892), (80, 246446), (149, 132320), (160, 123223), (298, 66160), (596, 33080), (745, 26464), (827, 23840), (1192, 16540), (1490, 13232), (1654, 11920), (2384, 8270), (2980, 6616), (3308, 5960), (4135, 4768)]