21179884

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{1873}}^1$

素因数の和:2145

約数の個数: 24

約数和(自身を含む): 40613328

約数和(自身を除く): 19433444

約数列:

[1, 2, 4, 11, 22, 44, 257, 514, 1028, 1873, 2827, 3746, 5654, 7492, 11308, 20603, 41206, 82412, 481361, 962722, 1925444, 5294971, 10589942, 21179884]

約数ペア:

[(1, 21179884), (2, 10589942), (4, 5294971), (11, 1925444), (22, 962722), (44, 481361), (257, 82412), (514, 41206), (1028, 20603), (1873, 11308), (2827, 7492), (3746, 5654)]