51164840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1\times {\mathrm{197}}^1$

素因数の和:402

約数の個数: 64

約数和(自身を含む): 119180160

約数和(自身を除く): 68015320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 151, 172, 197, 215, 302, 344, 394, 430, 604, 755, 788, 860, 985, 1208, 1510, 1576, 1720, 1970, 3020, 3940, 6040, 6493, 7880, 8471, 12986, 16942, 25972, 29747, 32465, 33884, 42355, 51944, 59494, 64930, 67768, 84710, 118988, 129860, 148735, 169420, 237976, 259720, 297470, 338840, 594940, 1189880, 1279121, 2558242, 5116484, 6395605, 10232968, 12791210, 25582420, 51164840]

約数ペア:

[(1, 51164840), (2, 25582420), (4, 12791210), (5, 10232968), (8, 6395605), (10, 5116484), (20, 2558242), (40, 1279121), (43, 1189880), (86, 594940), (151, 338840), (172, 297470), (197, 259720), (215, 237976), (302, 169420), (344, 148735), (394, 129860), (430, 118988), (604, 84710), (755, 67768), (788, 64930), (860, 59494), (985, 51944), (1208, 42355), (1510, 33884), (1576, 32465), (1720, 29747), (1970, 25972), (3020, 16942), (3940, 12986), (6040, 8471), (6493, 7880)]