20197289

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{331}}^1\times {\mathrm{379}}^1$

素因数の和:740

約数の個数: 16

約数和(自身を含む): 24222720

約数和(自身を除く): 4025431

約数列:

[1, 7, 23, 161, 331, 379, 2317, 2653, 7613, 8717, 53291, 61019, 125449, 878143, 2885327, 20197289]

約数ペア:

[(1, 20197289), (7, 2885327), (23, 878143), (161, 125449), (331, 61019), (379, 53291), (2317, 8717), (2653, 7613)]