19949215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{27901}}^1$

素因数の和:27930

約数の個数: 16

約数和(自身を含む): 28125216

約数和(自身を除く): 8176001

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 27901, 139505, 306911, 362713, 1534555, 1813565, 3989843, 19949215]

約数ペア:

[(1, 19949215), (5, 3989843), (11, 1813565), (13, 1534555), (55, 362713), (65, 306911), (143, 139505), (715, 27901)]