19717765

素因数分解:

$5^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{829}}^1$

素因数の和:972

約数の個数: 16

約数和(自身を含む): 24382080

約数和(自身を除く): 4664315

約数列:

[1, 5, 67, 71, 335, 355, 829, 4145, 4757, 23785, 55543, 58859, 277715, 294295, 3943553, 19717765]

約数ペア:

[(1, 19717765), (5, 3943553), (67, 294295), (71, 277715), (335, 58859), (355, 55543), (829, 23785), (4145, 4757)]