21287077

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{4363}}^1$

素因数の和:4428

約数の個数: 16

約数和(自身を含む): 26393472

約数和(自身を除く): 5106395

約数列:

[1, 7, 17, 41, 119, 287, 697, 4363, 4879, 30541, 74171, 178883, 519197, 1252181, 3041011, 21287077]

約数ペア:

[(1, 21287077), (7, 3041011), (17, 1252181), (41, 519197), (119, 178883), (287, 74171), (697, 30541), (4363, 4879)]