213712720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{205493}}^1$

素因数の和:205519

約数の個数: 40

約数和(自身を含む): 535106376

約数和(自身を除く): 321393656

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 205493, 410986, 821972, 1027465, 1643944, 2054930, 2671409, 3287888, 4109860, 5342818, 8219720, 10685636, 13357045, 16439440, 21371272, 26714090, 42742544, 53428180, 106856360, 213712720]

約数ペア:

[(1, 213712720), (2, 106856360), (4, 53428180), (5, 42742544), (8, 26714090), (10, 21371272), (13, 16439440), (16, 13357045), (20, 10685636), (26, 8219720), (40, 5342818), (52, 4109860), (65, 3287888), (80, 2671409), (104, 2054930), (130, 1643944), (208, 1027465), (260, 821972), (520, 410986), (1040, 205493)]