20761208

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{2243}}^1$

素因数の和:2351

約数の個数: 32

約数和(自身を含む): 42411600

約数和(自身を除く): 21650392

約数列:

[1, 2, 4, 8, 13, 26, 52, 89, 104, 178, 356, 712, 1157, 2243, 2314, 4486, 4628, 8972, 9256, 17944, 29159, 58318, 116636, 199627, 233272, 399254, 798508, 1597016, 2595151, 5190302, 10380604, 20761208]

約数ペア:

[(1, 20761208), (2, 10380604), (4, 5190302), (8, 2595151), (13, 1597016), (26, 798508), (52, 399254), (89, 233272), (104, 199627), (178, 116636), (356, 58318), (712, 29159), (1157, 17944), (2243, 9256), (2314, 8972), (4486, 4628)]