20121219605

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{401}}^1\times {\mathrm{4003}}^1$

素因数の和:4541

約数の個数: 32

約数和(自身を含む): 25496190720

約数和(自身を除く): 5374971115

約数列:

[1, 5, 23, 109, 115, 401, 545, 2005, 2507, 4003, 9223, 12535, 20015, 43709, 46115, 92069, 218545, 436327, 460345, 1005307, 1605203, 2181635, 5026535, 8026015, 10035521, 36919669, 50177605, 174967127, 184598345, 874835635, 4024243921, 20121219605]

約数ペア:

[(1, 20121219605), (5, 4024243921), (23, 874835635), (109, 184598345), (115, 174967127), (401, 50177605), (545, 36919669), (2005, 10035521), (2507, 8026015), (4003, 5026535), (9223, 2181635), (12535, 1605203), (20015, 1005307), (43709, 460345), (46115, 436327), (92069, 218545)]