64648520

素因数分解:

$2^3\times 5^1\times {\mathrm{283}}^1\times {\mathrm{5711}}^1$

素因数の和:6005

約数の個数: 32

約数和(自身を含む): 145998720

約数和(自身を除く): 81350200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 283, 566, 1132, 1415, 2264, 2830, 5660, 5711, 11320, 11422, 22844, 28555, 45688, 57110, 114220, 228440, 1616213, 3232426, 6464852, 8081065, 12929704, 16162130, 32324260, 64648520]

約数ペア:

[(1, 64648520), (2, 32324260), (4, 16162130), (5, 12929704), (8, 8081065), (10, 6464852), (20, 3232426), (40, 1616213), (283, 228440), (566, 114220), (1132, 57110), (1415, 45688), (2264, 28555), (2830, 22844), (5660, 11422), (5711, 11320)]