20961810

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{283}}^1\times {\mathrm{823}}^1$

素因数の和:1119

約数の個数: 48

約数和(自身を含む): 54759744

約数和(自身を除く): 33797934

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 283, 566, 823, 849, 1415, 1646, 1698, 2469, 2547, 2830, 4115, 4245, 4938, 5094, 7407, 8230, 8490, 12345, 12735, 14814, 24690, 25470, 37035, 74070, 232909, 465818, 698727, 1164545, 1397454, 2096181, 2329090, 3493635, 4192362, 6987270, 10480905, 20961810]

約数ペア:

[(1, 20961810), (2, 10480905), (3, 6987270), (5, 4192362), (6, 3493635), (9, 2329090), (10, 2096181), (15, 1397454), (18, 1164545), (30, 698727), (45, 465818), (90, 232909), (283, 74070), (566, 37035), (823, 25470), (849, 24690), (1415, 14814), (1646, 12735), (1698, 12345), (2469, 8490), (2547, 8230), (2830, 7407), (4115, 5094), (4245, 4938)]