20806685830

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1907}}^1\times {\mathrm{1973}}^1$

素因数の和:3973

約数の個数: 64

約数和(自身を含む): 43388835840

約数和(自身を除く): 22582150010

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 79, 158, 395, 553, 790, 1106, 1907, 1973, 2765, 3814, 3946, 5530, 9535, 9865, 13349, 13811, 19070, 19730, 26698, 27622, 66745, 69055, 133490, 138110, 150653, 155867, 301306, 311734, 753265, 779335, 1054571, 1091069, 1506530, 1558670, 2109142, 2182138, 3762511, 5272855, 5455345, 7525022, 10545710, 10910690, 18812555, 26337577, 37625110, 52675154, 131687885, 263375770, 297238369, 594476738, 1486191845, 2080668583, 2972383690, 4161337166, 10403342915, 20806685830]

約数ペア:

[(1, 20806685830), (2, 10403342915), (5, 4161337166), (7, 2972383690), (10, 2080668583), (14, 1486191845), (35, 594476738), (70, 297238369), (79, 263375770), (158, 131687885), (395, 52675154), (553, 37625110), (790, 26337577), (1106, 18812555), (1907, 10910690), (1973, 10545710), (2765, 7525022), (3814, 5455345), (3946, 5272855), (5530, 3762511), (9535, 2182138), (9865, 2109142), (13349, 1558670), (13811, 1506530), (19070, 1091069), (19730, 1054571), (26698, 779335), (27622, 753265), (66745, 311734), (69055, 301306), (133490, 155867), (138110, 150653)]