19701895

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{7477}}^1$

素因数の和:7530

約数の個数: 16

約数和(自身を含む): 25843968

約数和(自身を除く): 6142073

約数列:

[1, 5, 17, 31, 85, 155, 527, 2635, 7477, 37385, 127109, 231787, 635545, 1158935, 3940379, 19701895]

約数ペア:

[(1, 19701895), (5, 3940379), (17, 1158935), (31, 635545), (85, 231787), (155, 127109), (527, 37385), (2635, 7477)]