21402788

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{21149}}^1$

素因数の和:21187

約数の個数: 24

約数和(自身を含む): 42638400

約数和(自身を除く): 21235612

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 92, 253, 506, 1012, 21149, 42298, 84596, 232639, 465278, 486427, 930556, 972854, 1945708, 5350697, 10701394, 21402788]

約数ペア:

[(1, 21402788), (2, 10701394), (4, 5350697), (11, 1945708), (22, 972854), (23, 930556), (44, 486427), (46, 465278), (92, 232639), (253, 84596), (506, 42298), (1012, 21149)]