20491919

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{7487}}^1$

素因数の和:7534

約数の個数: 16

約数和(自身を含む): 25878528

約数和(自身を除く): 5386609

約数列:

[1, 7, 17, 23, 119, 161, 391, 2737, 7487, 52409, 127279, 172201, 890953, 1205407, 2927417, 20491919]

約数ペア:

[(1, 20491919), (7, 2927417), (17, 1205407), (23, 890953), (119, 172201), (161, 127279), (391, 52409), (2737, 7487)]