20009860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{76961}}^1$

素因数の和:76983

約数の個数: 24

約数和(自身を含む): 45253656

約数和(自身を除く): 25243796

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 76961, 153922, 307844, 384805, 769610, 1000493, 1539220, 2000986, 4001972, 5002465, 10004930, 20009860]

約数ペア:

[(1, 20009860), (2, 10004930), (4, 5002465), (5, 4001972), (10, 2000986), (13, 1539220), (20, 1000493), (26, 769610), (52, 384805), (65, 307844), (130, 153922), (260, 76961)]