21721661

素因数分解:

${\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{487}}^1$

素因数の和:620

約数の個数: 16

約数和(自身を含む): 24267264

約数和(自身を除く): 2545603

約数列:

[1, 13, 47, 73, 487, 611, 949, 3431, 6331, 22889, 35551, 44603, 297557, 462163, 1670897, 21721661]

約数ペア:

[(1, 21721661), (13, 1670897), (47, 462163), (73, 297557), (487, 44603), (611, 35551), (949, 22889), (3431, 6331)]