20121528515

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{37}}^1\times {\mathrm{10289}}^1$

素因数の和:10404

約数の個数: 48

約数和(自身を含む): 27956365920

約数和(自身を除く): 7834837405

約数列:

[1, 5, 11, 31, 37, 55, 155, 185, 341, 407, 961, 1147, 1705, 2035, 4805, 5735, 10289, 10571, 12617, 35557, 51445, 52855, 63085, 113179, 177785, 318959, 380693, 391127, 565895, 1594795, 1903465, 1955635, 3508549, 4187623, 9887729, 11801483, 17542745, 20938115, 49438645, 59007415, 108765019, 129816313, 365845973, 543825095, 649081565, 1829229865, 4024305703, 20121528515]

約数ペア:

[(1, 20121528515), (5, 4024305703), (11, 1829229865), (31, 649081565), (37, 543825095), (55, 365845973), (155, 129816313), (185, 108765019), (341, 59007415), (407, 49438645), (961, 20938115), (1147, 17542745), (1705, 11801483), (2035, 9887729), (4805, 4187623), (5735, 3508549), (10289, 1955635), (10571, 1903465), (12617, 1594795), (35557, 565895), (51445, 391127), (52855, 380693), (63085, 318959), (113179, 177785)]