2119720

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{269}}^1$

素因数の和:477

約数の個数: 32

約数和(自身を含む): 4811400

約数和(自身を除く): 2691680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 269, 394, 538, 788, 985, 1076, 1345, 1576, 1970, 2152, 2690, 3940, 5380, 7880, 10760, 52993, 105986, 211972, 264965, 423944, 529930, 1059860, 2119720]

約数ペア:

[(1, 2119720), (2, 1059860), (4, 529930), (5, 423944), (8, 264965), (10, 211972), (20, 105986), (40, 52993), (197, 10760), (269, 7880), (394, 5380), (538, 3940), (788, 2690), (985, 2152), (1076, 1970), (1345, 1576)]