199985678

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{163}}^1\times {\mathrm{389}}^1$

素因数の和:656

約数の個数: 32

約数和(自身を含む): 322358400

約数和(自身を除く): 122372722

約数列:

[1, 2, 19, 38, 83, 163, 166, 326, 389, 778, 1577, 3097, 3154, 6194, 7391, 13529, 14782, 27058, 32287, 63407, 64574, 126814, 257051, 514102, 613453, 1204733, 1226906, 2409466, 5262781, 10525562, 99992839, 199985678]

約数ペア:

[(1, 199985678), (2, 99992839), (19, 10525562), (38, 5262781), (83, 2409466), (163, 1226906), (166, 1204733), (326, 613453), (389, 514102), (778, 257051), (1577, 126814), (3097, 64574), (3154, 63407), (6194, 32287), (7391, 27058), (13529, 14782)]