21712791

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{271}}^1\times {\mathrm{1571}}^1$

素因数の和:1862

約数の個数: 16

約数和(自身を含む): 30786048

約数和(自身を除く): 9073257

約数列:

[1, 3, 17, 51, 271, 813, 1571, 4607, 4713, 13821, 26707, 80121, 425741, 1277223, 7237597, 21712791]

約数ペア:

[(1, 21712791), (3, 7237597), (17, 1277223), (51, 425741), (271, 80121), (813, 26707), (1571, 13821), (4607, 4713)]