20789940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2207}}^1$

素因数の和:2376

約数の個数: 48

約数和(自身を含む): 58609152

約数和(自身を除く): 37819212

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 157, 314, 471, 628, 785, 942, 1570, 1884, 2207, 2355, 3140, 4414, 4710, 6621, 8828, 9420, 11035, 13242, 22070, 26484, 33105, 44140, 66210, 132420, 346499, 692998, 1039497, 1385996, 1732495, 2078994, 3464990, 4157988, 5197485, 6929980, 10394970, 20789940]

約数ペア:

[(1, 20789940), (2, 10394970), (3, 6929980), (4, 5197485), (5, 4157988), (6, 3464990), (10, 2078994), (12, 1732495), (15, 1385996), (20, 1039497), (30, 692998), (60, 346499), (157, 132420), (314, 66210), (471, 44140), (628, 33105), (785, 26484), (942, 22070), (1570, 13242), (1884, 11035), (2207, 9420), (2355, 8828), (3140, 6621), (4414, 4710)]