21654886

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{2081}}^1$

素因数の和:2148

約数の個数: 24

約数和(自身を含む): 36551592

約数和(自身を除く): 14896706

約数列:

[1, 2, 11, 22, 43, 86, 121, 242, 473, 946, 2081, 4162, 5203, 10406, 22891, 45782, 89483, 178966, 251801, 503602, 984313, 1968626, 10827443, 21654886]

約数ペア:

[(1, 21654886), (2, 10827443), (11, 1968626), (22, 984313), (43, 503602), (86, 251801), (121, 178966), (242, 89483), (473, 45782), (946, 22891), (2081, 10406), (4162, 5203)]