2819720

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{449}}^1$

素因数の和:617

約数の個数: 32

約数和(自身を含む): 6399000

約数和(自身を除く): 3579280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 449, 628, 785, 898, 1256, 1570, 1796, 2245, 3140, 3592, 4490, 6280, 8980, 17960, 70493, 140986, 281972, 352465, 563944, 704930, 1409860, 2819720]

約数ペア:

[(1, 2819720), (2, 1409860), (4, 704930), (5, 563944), (8, 352465), (10, 281972), (20, 140986), (40, 70493), (157, 17960), (314, 8980), (449, 6280), (628, 4490), (785, 3592), (898, 3140), (1256, 2245), (1570, 1796)]