6561640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{4001}}^1$

素因数の和:4053

約数の個数: 32

約数和(自身を含む): 15127560

約数和(自身を除く): 8565920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 4001, 8002, 16004, 20005, 32008, 40010, 80020, 160040, 164041, 328082, 656164, 820205, 1312328, 1640410, 3280820, 6561640]

約数ペア:

[(1, 6561640), (2, 3280820), (4, 1640410), (5, 1312328), (8, 820205), (10, 656164), (20, 328082), (40, 164041), (41, 160040), (82, 80020), (164, 40010), (205, 32008), (328, 20005), (410, 16004), (820, 8002), (1640, 4001)]