20448080

素因数分解:

$2^4\times 5^1\times {\mathrm{233}}^1\times {\mathrm{1097}}^1$

素因数の和:1343

約数の個数: 40

約数和(自身を含む): 47789352

約数和(自身を除く): 27341272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 233, 466, 932, 1097, 1165, 1864, 2194, 2330, 3728, 4388, 4660, 5485, 8776, 9320, 10970, 17552, 18640, 21940, 43880, 87760, 255601, 511202, 1022404, 1278005, 2044808, 2556010, 4089616, 5112020, 10224040, 20448080]

約数ペア:

[(1, 20448080), (2, 10224040), (4, 5112020), (5, 4089616), (8, 2556010), (10, 2044808), (16, 1278005), (20, 1022404), (40, 511202), (80, 255601), (233, 87760), (466, 43880), (932, 21940), (1097, 18640), (1165, 17552), (1864, 10970), (2194, 9320), (2330, 8776), (3728, 5485), (4388, 4660)]