638996919

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{577}}^1\times {\mathrm{907}}^1$

素因数の和:1535

約数の個数: 32

約数和(自身を含む): 957278976

約数和(自身を除く): 318282057

約数列:

[1, 3, 11, 33, 37, 111, 407, 577, 907, 1221, 1731, 2721, 6347, 9977, 19041, 21349, 29931, 33559, 64047, 100677, 234839, 369149, 523339, 704517, 1107447, 1570017, 5756729, 17270187, 19363543, 58090629, 212998973, 638996919]

約数ペア:

[(1, 638996919), (3, 212998973), (11, 58090629), (33, 19363543), (37, 17270187), (111, 5756729), (407, 1570017), (577, 1107447), (907, 704517), (1221, 523339), (1731, 369149), (2721, 234839), (6347, 100677), (9977, 64047), (19041, 33559), (21349, 29931)]