66545540

素因数分解:

$2^2\times 5^1\times {\mathrm{1193}}^1\times {\mathrm{2789}}^1$

素因数の和:3991

約数の個数: 24

約数和(自身を含む): 139912920

約数和(自身を除く): 73367380

約数列:

[1, 2, 4, 5, 10, 20, 1193, 2386, 2789, 4772, 5578, 5965, 11156, 11930, 13945, 23860, 27890, 55780, 3327277, 6654554, 13309108, 16636385, 33272770, 66545540]

約数ペア:

[(1, 66545540), (2, 33272770), (4, 16636385), (5, 13309108), (10, 6654554), (20, 3327277), (1193, 55780), (2386, 27890), (2789, 23860), (4772, 13945), (5578, 11930), (5965, 11156)]