80723905

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{263}}^1$

素因数の和:465

約数の個数: 32

約数和(自身を含む): 108117504

約数和(自身を除く): 27393599

約数列:

[1, 5, 17, 23, 85, 115, 157, 263, 391, 785, 1315, 1955, 2669, 3611, 4471, 6049, 13345, 18055, 22355, 30245, 41291, 61387, 102833, 206455, 306935, 514165, 701947, 949693, 3509735, 4748465, 16144781, 80723905]

約数ペア:

[(1, 80723905), (5, 16144781), (17, 4748465), (23, 3509735), (85, 949693), (115, 701947), (157, 514165), (263, 306935), (391, 206455), (785, 102833), (1315, 61387), (1955, 41291), (2669, 30245), (3611, 22355), (4471, 18055), (6049, 13345)]