21000994588

素因数分解:

$2^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1193}}^1\times {\mathrm{4523}}^1$

素因数の和:5866

約数の個数: 48

約数和(自身を含む): 42348983040

約数和(自身を除く): 21347988452

約数列:

[1, 2, 4, 7, 14, 28, 139, 278, 556, 973, 1193, 1946, 2386, 3892, 4523, 4772, 8351, 9046, 16702, 18092, 31661, 33404, 63322, 126644, 165827, 331654, 628697, 663308, 1160789, 1257394, 2321578, 2514788, 4400879, 4643156, 5395939, 8801758, 10791878, 17603516, 21583756, 37771573, 75543146, 151086292, 750035521, 1500071042, 3000142084, 5250248647, 10500497294, 21000994588]

約数ペア:

[(1, 21000994588), (2, 10500497294), (4, 5250248647), (7, 3000142084), (14, 1500071042), (28, 750035521), (139, 151086292), (278, 75543146), (556, 37771573), (973, 21583756), (1193, 17603516), (1946, 10791878), (2386, 8801758), (3892, 5395939), (4523, 4643156), (4772, 4400879), (8351, 2514788), (9046, 2321578), (16702, 1257394), (18092, 1160789), (31661, 663308), (33404, 628697), (63322, 331654), (126644, 165827)]