20579937

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{719}}^1$

素因数の和:805

約数の個数: 32

約数和(自身を含む): 33177600

約数和(自身を除く): 12597663

約数列:

[1, 3, 7, 21, 29, 47, 87, 141, 203, 329, 609, 719, 987, 1363, 2157, 4089, 5033, 9541, 15099, 20851, 28623, 33793, 62553, 101379, 145957, 236551, 437871, 709653, 979997, 2939991, 6859979, 20579937]

約数ペア:

[(1, 20579937), (3, 6859979), (7, 2939991), (21, 979997), (29, 709653), (47, 437871), (87, 236551), (141, 145957), (203, 101379), (329, 62553), (609, 33793), (719, 28623), (987, 20851), (1363, 15099), (2157, 9541), (4089, 5033)]