28911820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{2129}}^1$

素因数の和:2242

約数の個数: 48

約数和(自身を含む): 70136640

約数和(自身を除く): 41224820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 97, 140, 194, 388, 485, 679, 970, 1358, 1940, 2129, 2716, 3395, 4258, 6790, 8516, 10645, 13580, 14903, 21290, 29806, 42580, 59612, 74515, 149030, 206513, 298060, 413026, 826052, 1032565, 1445591, 2065130, 2891182, 4130260, 5782364, 7227955, 14455910, 28911820]

約数ペア:

[(1, 28911820), (2, 14455910), (4, 7227955), (5, 5782364), (7, 4130260), (10, 2891182), (14, 2065130), (20, 1445591), (28, 1032565), (35, 826052), (70, 413026), (97, 298060), (140, 206513), (194, 149030), (388, 74515), (485, 59612), (679, 42580), (970, 29806), (1358, 21290), (1940, 14903), (2129, 13580), (2716, 10645), (3395, 8516), (4258, 6790)]