21407408

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{121633}}^1$

素因数の和:121652

約数の個数: 20

約数和(自身を含む): 45247848

約数和(自身を除く): 23840440

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 121633, 243266, 486532, 973064, 1337963, 1946128, 2675926, 5351852, 10703704, 21407408]

約数ペア:

[(1, 21407408), (2, 10703704), (4, 5351852), (8, 2675926), (11, 1946128), (16, 1337963), (22, 973064), (44, 486532), (88, 243266), (176, 121633)]