219952720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211493}}^1$

素因数の和:211519

約数の個数: 40

約数和(自身を含む): 550730376

約数和(自身を除く): 330777656

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 211493, 422986, 845972, 1057465, 1691944, 2114930, 2749409, 3383888, 4229860, 5498818, 8459720, 10997636, 13747045, 16919440, 21995272, 27494090, 43990544, 54988180, 109976360, 219952720]

約数ペア:

[(1, 219952720), (2, 109976360), (4, 54988180), (5, 43990544), (8, 27494090), (10, 21995272), (13, 16919440), (16, 13747045), (20, 10997636), (26, 8459720), (40, 5498818), (52, 4229860), (65, 3383888), (80, 2749409), (104, 2114930), (130, 1691944), (208, 1057465), (260, 845972), (520, 422986), (1040, 211493)]