21000604372

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{2131}}^1\times {\mathrm{2309}}^1$

素因数の和:4552

約数の個数: 48

約数和(自身を含む): 40541941440

約数和(自身を除く): 19541337068

約数列:

[1, 2, 4, 11, 22, 44, 97, 194, 388, 1067, 2131, 2134, 2309, 4262, 4268, 4618, 8524, 9236, 23441, 25399, 46882, 50798, 93764, 101596, 206707, 223973, 413414, 447946, 826828, 895892, 2273777, 2463703, 4547554, 4920479, 4927406, 9095108, 9840958, 9854812, 19681916, 54125269, 108250538, 216501076, 477286463, 954572926, 1909145852, 5250151093, 10500302186, 21000604372]

約数ペア:

[(1, 21000604372), (2, 10500302186), (4, 5250151093), (11, 1909145852), (22, 954572926), (44, 477286463), (97, 216501076), (194, 108250538), (388, 54125269), (1067, 19681916), (2131, 9854812), (2134, 9840958), (2309, 9095108), (4262, 4927406), (4268, 4920479), (4618, 4547554), (8524, 2463703), (9236, 2273777), (23441, 895892), (25399, 826828), (46882, 447946), (50798, 413414), (93764, 223973), (101596, 206707)]