91021640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{55501}}^1$

素因数の和:55553

約数の個数: 32

約数和(自身を含む): 209797560

約数和(自身を除く): 118775920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 55501, 111002, 222004, 277505, 444008, 555010, 1110020, 2220040, 2275541, 4551082, 9102164, 11377705, 18204328, 22755410, 45510820, 91021640]

約数ペア:

[(1, 91021640), (2, 45510820), (4, 22755410), (5, 18204328), (8, 11377705), (10, 9102164), (20, 4551082), (40, 2275541), (41, 2220040), (82, 1110020), (164, 555010), (205, 444008), (328, 277505), (410, 222004), (820, 111002), (1640, 55501)]