218596540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{642931}}^1$

素因数の和:642957

約数の個数: 24

約数和(自身を含む): 486056592

約数和(自身を除く): 267460052

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 642931, 1285862, 2571724, 3214655, 6429310, 10929827, 12858620, 21859654, 43719308, 54649135, 109298270, 218596540]

約数ペア:

[(1, 218596540), (2, 109298270), (4, 54649135), (5, 43719308), (10, 21859654), (17, 12858620), (20, 10929827), (34, 6429310), (68, 3214655), (85, 2571724), (170, 1285862), (340, 642931)]