21294940

素因数分解:

$2^2\times 5^1\times {\mathrm{433}}^1\times {\mathrm{2459}}^1$

素因数の和:2901

約数の個数: 24

約数和(自身を含む): 44840880

約数和(自身を除く): 23545940

約数列:

[1, 2, 4, 5, 10, 20, 433, 866, 1732, 2165, 2459, 4330, 4918, 8660, 9836, 12295, 24590, 49180, 1064747, 2129494, 4258988, 5323735, 10647470, 21294940]

約数ペア:

[(1, 21294940), (2, 10647470), (4, 5323735), (5, 4258988), (10, 2129494), (20, 1064747), (433, 49180), (866, 24590), (1732, 12295), (2165, 9836), (2459, 8660), (4330, 4918)]