20528823

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1\times {\mathrm{211}}^1$

素因数の和:375

約数の個数: 32

約数和(自身を含む): 32481792

約数和(自身を除く): 11952969

約数列:

[1, 3, 7, 21, 41, 113, 123, 211, 287, 339, 633, 791, 861, 1477, 2373, 4431, 4633, 8651, 13899, 23843, 25953, 32431, 60557, 71529, 97293, 166901, 181671, 500703, 977563, 2932689, 6842941, 20528823]

約数ペア:

[(1, 20528823), (3, 6842941), (7, 2932689), (21, 977563), (41, 500703), (113, 181671), (123, 166901), (211, 97293), (287, 71529), (339, 60557), (633, 32431), (791, 25953), (861, 23843), (1477, 13899), (2373, 8651), (4431, 4633)]