21010888

素因数分解:

$2^3\times {\mathrm{71}}^2\times {\mathrm{521}}^1$

素因数の和:669

約数の個数: 24

約数和(自身を含む): 40034790

約数和(自身を除く): 19023902

約数列:

[1, 2, 4, 8, 71, 142, 284, 521, 568, 1042, 2084, 4168, 5041, 10082, 20164, 36991, 40328, 73982, 147964, 295928, 2626361, 5252722, 10505444, 21010888]

約数ペア:

[(1, 21010888), (2, 10505444), (4, 5252722), (8, 2626361), (71, 295928), (142, 147964), (284, 73982), (521, 40328), (568, 36991), (1042, 20164), (2084, 10082), (4168, 5041)]