20813270

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{641}}^1$

素因数の和:856

約数の個数: 32

約数和(自身を含む): 39937536

約数和(自身を除く): 19124266

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 191, 382, 641, 955, 1282, 1910, 3205, 3247, 6410, 6494, 10897, 16235, 21794, 32470, 54485, 108970, 122431, 244862, 612155, 1224310, 2081327, 4162654, 10406635, 20813270]

約数ペア:

[(1, 20813270), (2, 10406635), (5, 4162654), (10, 2081327), (17, 1224310), (34, 612155), (85, 244862), (170, 122431), (191, 108970), (382, 54485), (641, 32470), (955, 21794), (1282, 16235), (1910, 10897), (3205, 6494), (3247, 6410)]