661244815

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{20693}}^1$

素因数の和:20799

約数の個数: 32

約数和(自身を含む): 1001258496

約数和(自身を除く): 340013681

約数列:

[1, 5, 7, 11, 35, 55, 77, 83, 385, 415, 581, 913, 2905, 4565, 6391, 20693, 31955, 103465, 144851, 227623, 724255, 1138115, 1593361, 1717519, 7966805, 8587595, 12022633, 18892709, 60113165, 94463545, 132248963, 661244815]

約数ペア:

[(1, 661244815), (5, 132248963), (7, 94463545), (11, 60113165), (35, 18892709), (55, 12022633), (77, 8587595), (83, 7966805), (385, 1717519), (415, 1593361), (581, 1138115), (913, 724255), (2905, 227623), (4565, 144851), (6391, 103465), (20693, 31955)]