20962942

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{283}}^1$

素因数の和:353

約数の個数: 64

約数和(自身を含む): 43513344

約数和(自身を除く): 22550402

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 37, 74, 77, 91, 143, 154, 182, 259, 283, 286, 407, 481, 518, 566, 814, 962, 1001, 1981, 2002, 2849, 3113, 3367, 3679, 3962, 5291, 5698, 6226, 6734, 7358, 10471, 10582, 20942, 21791, 25753, 37037, 40469, 43582, 51506, 73297, 74074, 80938, 115181, 136123, 146594, 230362, 272246, 283283, 566566, 806267, 952861, 1497353, 1612534, 1905722, 2994706, 10481471, 20962942]

約数ペア:

[(1, 20962942), (2, 10481471), (7, 2994706), (11, 1905722), (13, 1612534), (14, 1497353), (22, 952861), (26, 806267), (37, 566566), (74, 283283), (77, 272246), (91, 230362), (143, 146594), (154, 136123), (182, 115181), (259, 80938), (283, 74074), (286, 73297), (407, 51506), (481, 43582), (518, 40469), (566, 37037), (814, 25753), (962, 21791), (1001, 20942), (1981, 10582), (2002, 10471), (2849, 7358), (3113, 6734), (3367, 6226), (3679, 5698), (3962, 5291)]