80039440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{76961}}^1$

素因数の和:76987

約数の個数: 40

約数和(自身を含む): 200409048

約数和(自身を除く): 120369608

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 76961, 153922, 307844, 384805, 615688, 769610, 1000493, 1231376, 1539220, 2000986, 3078440, 4001972, 5002465, 6156880, 8003944, 10004930, 16007888, 20009860, 40019720, 80039440]

約数ペア:

[(1, 80039440), (2, 40019720), (4, 20009860), (5, 16007888), (8, 10004930), (10, 8003944), (13, 6156880), (16, 5002465), (20, 4001972), (26, 3078440), (40, 2000986), (52, 1539220), (65, 1231376), (80, 1000493), (104, 769610), (130, 615688), (208, 384805), (260, 307844), (520, 153922), (1040, 76961)]