21725193

素因数分解:

$3^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{4903}}^1$

素因数の和:5124

約数の個数: 16

約数和(自身を含む): 33268736

約数和(自身を除く): 11543543

約数列:

[1, 3, 7, 21, 211, 633, 1477, 4431, 4903, 14709, 34321, 102963, 1034533, 3103599, 7241731, 21725193]

約数ペア:

[(1, 21725193), (3, 7241731), (7, 3103599), (21, 1034533), (211, 102963), (633, 34321), (1477, 14709), (4431, 4903)]