21580494820

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{463}}^1\times {\mathrm{17011}}^1$

素因数の和:17620

約数の個数: 48

約数和(自身を含む): 45751120128

約数和(自身を除く): 24170625308

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 463, 548, 685, 926, 1370, 1852, 2315, 2740, 4630, 9260, 17011, 34022, 63431, 68044, 85055, 126862, 170110, 253724, 317155, 340220, 634310, 1268620, 2330507, 4661014, 7876093, 9322028, 11652535, 15752186, 23305070, 31504372, 39380465, 46610140, 78760930, 157521860, 1079024741, 2158049482, 4316098964, 5395123705, 10790247410, 21580494820]

約数ペア:

[(1, 21580494820), (2, 10790247410), (4, 5395123705), (5, 4316098964), (10, 2158049482), (20, 1079024741), (137, 157521860), (274, 78760930), (463, 46610140), (548, 39380465), (685, 31504372), (926, 23305070), (1370, 15752186), (1852, 11652535), (2315, 9322028), (2740, 7876093), (4630, 4661014), (9260, 2330507), (17011, 1268620), (34022, 634310), (63431, 340220), (68044, 317155), (85055, 253724), (126862, 170110)]