287307860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2052199}}^1$

素因数の和:2052215

約数の個数: 24

約数和(自身を含む): 689539200

約数和(自身を除く): 402231340

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2052199, 4104398, 8208796, 10260995, 14365393, 20521990, 28730786, 41043980, 57461572, 71826965, 143653930, 287307860]

約数ペア:

[(1, 287307860), (2, 143653930), (4, 71826965), (5, 57461572), (7, 41043980), (10, 28730786), (14, 20521990), (20, 14365393), (28, 10260995), (35, 8208796), (70, 4104398), (140, 2052199)]