20516925

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1913}}^1$

素因数の和:1950

約数の個数: 48

約数和(自身を含む): 39872448

約数和(自身を除く): 19355523

約数列:

[1, 3, 5, 11, 13, 15, 25, 33, 39, 55, 65, 75, 143, 165, 195, 275, 325, 429, 715, 825, 975, 1913, 2145, 3575, 5739, 9565, 10725, 21043, 24869, 28695, 47825, 63129, 74607, 105215, 124345, 143475, 273559, 315645, 373035, 526075, 621725, 820677, 1367795, 1578225, 1865175, 4103385, 6838975, 20516925]

約数ペア:

[(1, 20516925), (3, 6838975), (5, 4103385), (11, 1865175), (13, 1578225), (15, 1367795), (25, 820677), (33, 621725), (39, 526075), (55, 373035), (65, 315645), (75, 273559), (143, 143475), (165, 124345), (195, 105215), (275, 74607), (325, 63129), (429, 47825), (715, 28695), (825, 24869), (975, 21043), (1913, 10725), (2145, 9565), (3575, 5739)]