21025161

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{179}}^1\times {\mathrm{421}}^1$

素因数の和:637

約数の個数: 24

約数和(自身を含む): 31599360

約数和(自身を除く): 10574199

約数列:

[1, 3, 9, 31, 93, 179, 279, 421, 537, 1263, 1611, 3789, 5549, 13051, 16647, 39153, 49941, 75359, 117459, 226077, 678231, 2336129, 7008387, 21025161]

約数ペア:

[(1, 21025161), (3, 7008387), (9, 2336129), (31, 678231), (93, 226077), (179, 117459), (279, 75359), (421, 49941), (537, 39153), (1263, 16647), (1611, 13051), (3789, 5549)]