257210

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{89}}^1$

素因数の和:130

約数の個数: 24

約数和(自身を含む): 497340

約数和(自身を除く): 240130

約数列:

[1, 2, 5, 10, 17, 34, 85, 89, 170, 178, 289, 445, 578, 890, 1445, 1513, 2890, 3026, 7565, 15130, 25721, 51442, 128605, 257210]

約数ペア:

[(1, 257210), (2, 128605), (5, 51442), (10, 25721), (17, 15130), (34, 7565), (85, 3026), (89, 2890), (170, 1513), (178, 1445), (289, 890), (445, 578)]