20561551

素因数分解:

${\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{179}}^1\times {\mathrm{233}}^1$

素因数の和:458

約数の個数: 16

約数和(自身を含む): 22744800

約数和(自身を除く): 2183249

約数列:

[1, 17, 29, 179, 233, 493, 3043, 3961, 5191, 6757, 41707, 88247, 114869, 709019, 1209503, 20561551]

約数ペア:

[(1, 20561551), (17, 1209503), (29, 709019), (179, 114869), (233, 88247), (493, 41707), (3043, 6757), (3961, 5191)]