20631213

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{157}}^2$

素因数の和:354

約数の個数: 24

約数和(自身を含む): 31752960

約数和(自身を除く): 11121747

約数列:

[1, 3, 9, 27, 31, 93, 157, 279, 471, 837, 1413, 4239, 4867, 14601, 24649, 43803, 73947, 131409, 221841, 665523, 764119, 2292357, 6877071, 20631213]

約数ペア:

[(1, 20631213), (3, 6877071), (9, 2292357), (27, 764119), (31, 665523), (93, 221841), (157, 131409), (279, 73947), (471, 43803), (837, 24649), (1413, 14601), (4239, 4867)]