81593528

素因数分解:

$2^3\times {\mathrm{157}}^1\times {\mathrm{167}}^1\times {\mathrm{389}}^1$

素因数の和:719

約数の個数: 32

約数和(自身を含む): 155282400

約数和(自身を除く): 73688872

約数列:

[1, 2, 4, 8, 157, 167, 314, 334, 389, 628, 668, 778, 1256, 1336, 1556, 3112, 26219, 52438, 61073, 64963, 104876, 122146, 129926, 209752, 244292, 259852, 488584, 519704, 10199191, 20398382, 40796764, 81593528]

約数ペア:

[(1, 81593528), (2, 40796764), (4, 20398382), (8, 10199191), (157, 519704), (167, 488584), (314, 259852), (334, 244292), (389, 209752), (628, 129926), (668, 122146), (778, 104876), (1256, 64963), (1336, 61073), (1556, 52438), (3112, 26219)]