331280

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:155

約数の個数: 40

約数和(自身を含む): 796824

約数和(自身を除く): 465544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 101, 164, 202, 205, 328, 404, 410, 505, 656, 808, 820, 1010, 1616, 1640, 2020, 3280, 4040, 4141, 8080, 8282, 16564, 20705, 33128, 41410, 66256, 82820, 165640, 331280]

約数ペア:

[(1, 331280), (2, 165640), (4, 82820), (5, 66256), (8, 41410), (10, 33128), (16, 20705), (20, 16564), (40, 8282), (41, 8080), (80, 4141), (82, 4040), (101, 3280), (164, 2020), (202, 1640), (205, 1616), (328, 1010), (404, 820), (410, 808), (505, 656)]