28860520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55501}}^1$

素因数の和:55525

約数の個数: 32

約数和(自身を含む): 69932520

約数和(自身を除く): 41072000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 55501, 111002, 222004, 277505, 444008, 555010, 721513, 1110020, 1443026, 2220040, 2886052, 3607565, 5772104, 7215130, 14430260, 28860520]

約数ペア:

[(1, 28860520), (2, 14430260), (4, 7215130), (5, 5772104), (8, 3607565), (10, 2886052), (13, 2220040), (20, 1443026), (26, 1110020), (40, 721513), (52, 555010), (65, 444008), (104, 277505), (130, 222004), (260, 111002), (520, 55501)]