20127839980

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1693}}^1\times {\mathrm{4339}}^1$

素因数の和:6178

約数の個数: 48

約数和(自身を含む): 42611960160

約数和(自身を除く): 22484120180

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 1693, 2740, 3386, 4339, 6772, 8465, 8678, 16930, 17356, 21695, 33860, 43390, 86780, 231941, 463882, 594443, 927764, 1159705, 1188886, 2319410, 2377772, 2972215, 4638820, 5944430, 7345927, 11888860, 14691854, 29383708, 36729635, 73459270, 146918540, 1006391999, 2012783998, 4025567996, 5031959995, 10063919990, 20127839980]

約数ペア:

[(1, 20127839980), (2, 10063919990), (4, 5031959995), (5, 4025567996), (10, 2012783998), (20, 1006391999), (137, 146918540), (274, 73459270), (548, 36729635), (685, 29383708), (1370, 14691854), (1693, 11888860), (2740, 7345927), (3386, 5944430), (4339, 4638820), (6772, 2972215), (8465, 2377772), (8678, 2319410), (16930, 1188886), (17356, 1159705), (21695, 927764), (33860, 594443), (43390, 463882), (86780, 231941)]