256484240

素因数分解:

$2^4\times 5^1\times {\mathrm{181}}^1\times {\mathrm{17713}}^1$

素因数の和:17907

約数の個数: 40

約数和(自身を含む): 599654328

約数和(自身を除く): 343170088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 181, 362, 724, 905, 1448, 1810, 2896, 3620, 7240, 14480, 17713, 35426, 70852, 88565, 141704, 177130, 283408, 354260, 708520, 1417040, 3206053, 6412106, 12824212, 16030265, 25648424, 32060530, 51296848, 64121060, 128242120, 256484240]

約数ペア:

[(1, 256484240), (2, 128242120), (4, 64121060), (5, 51296848), (8, 32060530), (10, 25648424), (16, 16030265), (20, 12824212), (40, 6412106), (80, 3206053), (181, 1417040), (362, 708520), (724, 354260), (905, 283408), (1448, 177130), (1810, 141704), (2896, 88565), (3620, 70852), (7240, 35426), (14480, 17713)]