19900235

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{1933}}^1$

素因数の和:2038

約数の個数: 16

約数和(自身を含む): 25064640

約数和(自身を除く): 5164405

約数列:

[1, 5, 29, 71, 145, 355, 1933, 2059, 9665, 10295, 56057, 137243, 280285, 686215, 3980047, 19900235]

約数ペア:

[(1, 19900235), (5, 3980047), (29, 686215), (71, 280285), (145, 137243), (355, 56057), (1933, 10295), (2059, 9665)]