21356236

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{449}}^1$

素因数の和:534

約数の個数: 48

約数和(自身を含む): 43545600

約数和(自身を除く): 22189364

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 47, 92, 94, 188, 253, 449, 506, 517, 898, 1012, 1034, 1081, 1796, 2068, 2162, 4324, 4939, 9878, 10327, 11891, 19756, 20654, 21103, 23782, 41308, 42206, 47564, 84412, 113597, 227194, 232133, 454388, 464266, 485369, 928532, 970738, 1941476, 5339059, 10678118, 21356236]

約数ペア:

[(1, 21356236), (2, 10678118), (4, 5339059), (11, 1941476), (22, 970738), (23, 928532), (44, 485369), (46, 464266), (47, 454388), (92, 232133), (94, 227194), (188, 113597), (253, 84412), (449, 47564), (506, 42206), (517, 41308), (898, 23782), (1012, 21103), (1034, 20654), (1081, 19756), (1796, 11891), (2068, 10327), (2162, 9878), (4324, 4939)]