12672280

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{7727}}^1$

素因数の和:7779

約数の個数: 32

約数和(自身を含む): 29211840

約数和(自身を除く): 16539560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 7727, 15454, 30908, 38635, 61816, 77270, 154540, 309080, 316807, 633614, 1267228, 1584035, 2534456, 3168070, 6336140, 12672280]

約数ペア:

[(1, 12672280), (2, 6336140), (4, 3168070), (5, 2534456), (8, 1584035), (10, 1267228), (20, 633614), (40, 316807), (41, 309080), (82, 154540), (164, 77270), (205, 61816), (328, 38635), (410, 30908), (820, 15454), (1640, 7727)]