17920145

素因数分解:

$5^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1\times {\mathrm{251}}^1$

素因数の和:496

約数の個数: 16

約数和(自身を含む): 21954240

約数和(自身を除く): 4034095

約数列:

[1, 5, 109, 131, 251, 545, 655, 1255, 14279, 27359, 32881, 71395, 136795, 164405, 3584029, 17920145]

約数ペア:

[(1, 17920145), (5, 3584029), (109, 164405), (131, 136795), (251, 71395), (545, 32881), (655, 27359), (1255, 14279)]