21421004

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{347}}^1$

素因数の和:446

約数の個数: 48

約数和(自身を含む): 43497216

約数和(自身を除く): 22076212

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 61, 92, 122, 244, 253, 347, 506, 671, 694, 1012, 1342, 1388, 1403, 2684, 2806, 3817, 5612, 7634, 7981, 15268, 15433, 15962, 21167, 30866, 31924, 42334, 61732, 84668, 87791, 175582, 232837, 351164, 465674, 486841, 931348, 973682, 1947364, 5355251, 10710502, 21421004]

約数ペア:

[(1, 21421004), (2, 10710502), (4, 5355251), (11, 1947364), (22, 973682), (23, 931348), (44, 486841), (46, 465674), (61, 351164), (92, 232837), (122, 175582), (244, 87791), (253, 84668), (347, 61732), (506, 42334), (671, 31924), (694, 30866), (1012, 21167), (1342, 15962), (1388, 15433), (1403, 15268), (2684, 7981), (2806, 7634), (3817, 5612)]