20505511

素因数分解:

${\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{479}}^1$

素因数の和:618

約数の個数: 16

約数和(自身を含む): 22982400

約数和(自身を除く): 2476889

約数列:

[1, 13, 37, 89, 479, 481, 1157, 3293, 6227, 17723, 42631, 42809, 230399, 554203, 1577347, 20505511]

約数ペア:

[(1, 20505511), (13, 1577347), (37, 554203), (89, 230399), (479, 42809), (481, 42631), (1157, 17723), (3293, 6227)]