28021565

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{39191}}^1$

素因数の和:39220

約数の個数: 16

約数和(自身を含む): 39505536

約数和(自身を除く): 11483971

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 39191, 195955, 431101, 509483, 2155505, 2547415, 5604313, 28021565]

約数ペア:

[(1, 28021565), (5, 5604313), (11, 2547415), (13, 2155505), (55, 509483), (65, 431101), (143, 195955), (715, 39191)]