393340

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{277}}^1$

素因数の和:357

約数の個数: 24

約数和(自身を含む): 840672

約数和(自身を除く): 447332

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 277, 284, 355, 554, 710, 1108, 1385, 1420, 2770, 5540, 19667, 39334, 78668, 98335, 196670, 393340]

約数ペア:

[(1, 393340), (2, 196670), (4, 98335), (5, 78668), (10, 39334), (20, 19667), (71, 5540), (142, 2770), (277, 1420), (284, 1385), (355, 1108), (554, 710)]