64487960

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{37493}}^1$

素因数の和:37547

約数の個数: 32

約数和(自身を含む): 148476240

約数和(自身を除く): 83988280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 37493, 74986, 149972, 187465, 299944, 374930, 749860, 1499720, 1612199, 3224398, 6448796, 8060995, 12897592, 16121990, 32243980, 64487960]

約数ペア:

[(1, 64487960), (2, 32243980), (4, 16121990), (5, 12897592), (8, 8060995), (10, 6448796), (20, 3224398), (40, 1612199), (43, 1499720), (86, 749860), (172, 374930), (215, 299944), (344, 187465), (430, 149972), (860, 74986), (1720, 37493)]