638974511

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{619}}^1$

素因数の和:795

約数の個数: 32

約数和(自身を含む): 777093120

約数和(自身を除く): 138118609

約数列:

[1, 7, 31, 67, 71, 217, 469, 497, 619, 2077, 2201, 4333, 4757, 14539, 15407, 19189, 33299, 41473, 43949, 134323, 147467, 290311, 307643, 1032269, 1285663, 1362419, 2944583, 8999641, 9536933, 20612081, 91282073, 638974511]

約数ペア:

[(1, 638974511), (7, 91282073), (31, 20612081), (67, 9536933), (71, 8999641), (217, 2944583), (469, 1362419), (497, 1285663), (619, 1032269), (2077, 307643), (2201, 290311), (4333, 147467), (4757, 134323), (14539, 43949), (15407, 41473), (19189, 33299)]