20591865

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{65371}}^1$

素因数の和:65389

約数の個数: 24

約数和(自身を含む): 40792128

約数和(自身を除く): 20200263

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 65371, 196113, 326855, 457597, 588339, 980565, 1372791, 2287985, 2941695, 4118373, 6863955, 20591865]

約数ペア:

[(1, 20591865), (3, 6863955), (5, 4118373), (7, 2941695), (9, 2287985), (15, 1372791), (21, 980565), (35, 588339), (45, 457597), (63, 326855), (105, 196113), (315, 65371)]