20447840

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18257}}^1$

素因数の和:18279

約数の個数: 48

約数和(自身を含む): 55212192

約数和(自身を除く): 34764352

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18257, 36514, 73028, 91285, 127799, 146056, 182570, 255598, 292112, 365140, 511196, 584224, 638995, 730280, 1022392, 1277990, 1460560, 2044784, 2555980, 2921120, 4089568, 5111960, 10223920, 20447840]

約数ペア:

[(1, 20447840), (2, 10223920), (4, 5111960), (5, 4089568), (7, 2921120), (8, 2555980), (10, 2044784), (14, 1460560), (16, 1277990), (20, 1022392), (28, 730280), (32, 638995), (35, 584224), (40, 511196), (56, 365140), (70, 292112), (80, 255598), (112, 182570), (140, 146056), (160, 127799), (224, 91285), (280, 73028), (560, 36514), (1120, 18257)]